View source for Science

{{Short description|Systematic endeavor for gaining knowledge}}
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{{Science|expanded=}}

'''Science''' is a rigorous, [[Scientific method|systematic]] endeavor that builds and organizes [[knowledge]] in the form of [[Testability|testable]] [[explanation]]s and [[prediction]]s about the world.<ref name="EOWilson1999a2">{{Cite book |last=Wilson |first=E.O. |url=https://archive.org/details/consilienceunity00wils_135 |title=Consilience: The Unity of Knowledge |publisher=Vintage |year=1999 |isbn=978-0-679-76867-8 |edition=Reprint |location=New York |pages=[https://archive.org/details/consilienceunity00wils_135/page/n55 49]–71 |chapter=The natural sciences |url-access=limited}}</ref><ref name="Heilbron">{{cite book |last=Heilbron |first=J.L. |title=The Oxford Companion to the History of Modern Science |publisher=Oxford University Press |year=2003 |isbn=978-0-19-511229-0 |location=New York |pages=vii–x |chapter=Preface |quote=...modern science is a discovery as well as an invention. It was a discovery that nature generally acts regularly enough to be described by laws and even by mathematics; and required invention to devise the techniques, abstractions, apparatus, and organization for exhibiting the regularities and securing their law-like descriptions. |display-authors=etal |author-link=J. L. Heilbron}}</ref> Modern science is typically divided into three major branches:<ref name="cohen2021">{{cite book |last=Cohen |first=Eliel |url=https://www.routledge.com/The-University-and-its-Boundaries-Thriving-or-Surviving-in-the-21st-Century/Cohen/p/book/9780367562984 |title=The University and its Boundaries: Thriving or Surviving in the 21st Century |publisher=Routledge |year=2021 |isbn=978-0-367-56298-4 |location=New York |pages=14–41 |chapter=The boundary lens: theorising academic actitity |access-date=May 4, 2021 |archive-url=https://web.archive.org/web/20210505045450/https://www.routledge.com/The-University-and-its-Boundaries-Thriving-or-Surviving-in-the-21st-Century/Cohen/p/book/9780367562984 |archive-date=May 5, 2021 |url-status=live}}</ref> the [[natural science]]s (e.g., [[physics]], [[chemistry]], and [[biology]]), which study the [[Universe|physical world]]; the [[social science]]s (e.g., economics, [[psychology]], and sociology), which study [[individual]]s and societies;<ref name="colanderhunt2019">{{cite book |last1=Colander |first1=David C. |title=Social Science: An Introduction to the Study of Society |last2=Hunt |first2=Elgin F. |date=2019 |publisher=Routledge |edition=17th |location=New York, NY |pages=1–22 |chapter=Social science and its methods}}</ref><ref name="nisbetgreenfeld2021">{{cite encyclopedia |title=Social Science |encyclopedia=Encyclopedia Britannica |publisher=Encyclopædia Britannica, Inc. |url=https://www.britannica.com/topic/social-science |access-date=May 9, 2021 |date=October 16, 2020 |archive-url=https://web.archive.org/web/20220202193947/https://www.britannica.com/topic/social-science |archive-date=February 2, 2022 |last2=Greenfeld |first2=Liah |last1=Nisbet |first1=Robert A. |url-status=live}}</ref> and the [[formal science]]s (e.g., [[logic]], mathematics, and [[theoretical computer science]]), which study [[formal system]]s, governed by [[axiom]]s and rules.<ref name="löwe2002">{{cite journal |last=Löwe |first=Benedikt |author-link=Benedikt Löwe |year=2002 |title=The formal sciences: their scope, their foundations, and their unity |journal=Synthese |volume=133 |issue=1/2 |pages=5–11 |doi=10.1023/A:1020887832028 |s2cid=9272212}}</ref><ref name="rucker2019">{{cite book |last=Rucker |first=Rudy |url=http://www.rudyrucker.com/infinityandthemind/#calibre_link-328 |title=Infinity and the Mind: The Science and Philosophy of the Infinite |publisher=Princeton University Press |year=2019 |isbn=978-0-691-19138-6 |edition=Reprint |location=Princeton, New Jersey |pages=157–188 |chapter=Robots and souls |author-link=Rudy Rucker |access-date=May 11, 2021 |archive-url=https://web.archive.org/web/20210226212447/http://www.rudyrucker.com/infinityandthemind/#calibre_link-328 |archive-date=February 26, 2021 |url-status=live}}</ref> There is disagreement whether the formal sciences are science disciplines,<ref name="Bishop1991">{{cite book |last1=Bishop |first1=Alan |title=Mathematical Enculturation: A Cultural Perspective on Mathematics Education |publisher=Kluwer Academic Publishers |year=1991 |isbn=978-0-7923-1270-3 |location=Norwell, Massachusetts |pages=20–59 |chapter=Environmental activities and mathematical culture |access-date=March 24, 2018 |chapter-url=https://books.google.com/books?id=9AgrBgAAQBAJ&pg=PA54 |archive-url=https://web.archive.org/web/20201225195821/https://books.google.com/books?id=9AgrBgAAQBAJ&pg=PA54 |archive-date=December 25, 2020 |url-status=live}}</ref><ref name="nickles2013">{{cite book |last1=Nickles |first1=Thomas |title=Philosophy of Pseudoscience: Reconsidering the Demarcation Problem |publisher=The University of Chicago Press |year=2013 |location=Chicago |page=104 |chapter=The Problem of Demarcation}}</ref><ref name="Bunge 19982">{{cite book |last1=Bunge |first1=Mario |title=Philosophy of Science |volume=1, From Problem to Theory |date=1998 |publisher=Routledge |isbn=978-0-7658-0413-6 |edition=revised |location=New York |pages=3–50 |chapter=The Scientific Approach}}</ref> because they do not rely on [[empirical evidence]].<ref name="Fetzer2013">{{cite book |last1=Fetzer |first1=James H. |title=Computers and Cognition: Why Minds are not Machines |publisher=Kluwer Academic Publishers |year=2013 |isbn=978-1-4438-1946-6 |location=Newcastle, United Kingdom |pages=271–308 |chapter=Computer reliability and public policy: Limits of knowledge of computer-based systems}}</ref><ref name="nickles2013" /> [[Applied science]]s are disciplines that use scientific knowledge for practical purposes, such as in engineering and medicine.<ref name="fischer20142">{{Cite journal |last1=Fischer |first1=M.R. |last2=Fabry |first2=G |year=2014 |title=Thinking and acting scientifically: Indispensable basis of medical education |journal=GMS Zeitschrift für Medizinische Ausbildung |volume=31 |issue=2 |pages=Doc24 |doi=10.3205/zma000916 |pmc=4027809 |pmid=24872859}}</ref><ref name="sinclair19932">{{Cite journal |last=Sinclair |first=Marius |year=1993 |title=On the Differences between the Engineering and Scientific Methods |url=https://www.ijee.ie/contents/c090593.html |url-status=live |journal=The International Journal of Engineering Education |archive-url=https://web.archive.org/web/20171115220102/https://www.ijee.ie/contents/c090593.html |archive-date=November 15, 2017 |access-date=September 7, 2018}}</ref><ref name="mbunge1966">{{Cite book |last=Bunge |first=M |title=Contributions to a Philosophy of Technology |chapter=Technology as Applied Science |publisher=Springer |year=1966 |isbn=978-94-010-2184-5 |editor-last=Rapp |editor-first=F. |location=Dordrecht, Netherlands |pages=19–39 |doi=10.1007/978-94-010-2182-1_2|s2cid=110332727 }}</ref>

The [[history of science]] spans the majority of the historical record, with the earliest written records of identifiable predecessors to modern science dating to [[Bronze Age]] [[Ancient Egypt|Egypt]] and [[Mesopotamia]] from around 3000 to 1200 [[Common Era|BCE]]. Their contributions to mathematics, [[astronomy]], and medicine entered and shaped the Greek [[natural philosophy]] of [[classical antiquity]], whereby formal attempts were made to provide explanations of events in the [[Universe|physical world]] based on natural causes, while further advancements, including the introduction of the [[Hindu–Arabic numeral system]], were made during the [[Golden Age of India#Gupta Empire|Golden Age of India]].<ref name=Lindberg2007a>{{Cite book |last=Lindberg |first=David C. |title=The beginnings of Western science: the European Scientific tradition in philosophical, religious, and institutional context |publisher=University of Chicago Press |year=2007 |isbn=978-0226482057 |edition=2nd}}</ref>{{rp|p=12}}<ref name="Grant2007a">{{cite book |last=Grant |first=Edward |title=A History of Natural Philosophy: From the Ancient World to the Nineteenth Century |publisher=Cambridge University Press |year=2007 |isbn=978-0-521-68957-1 |location=New York |pages=1–26 |chapter=Ancient Egypt to Plato |chapter-url=https://archive.org/details/historynaturalph00gran/page/n16 |chapter-url-access=limited}}</ref><ref>[https://books.google.com/books?id=rMAaBgAAQBAJ Building Bridges Among the BRICs], p. 125, Robert Crane, Springer, 2014</ref><ref name="Keay">{{Cite book |last=Keay |first=John |url=https://archive.org/details/indiahistory00keay/page/132 |title=India: A history |publisher=Atlantic Monthly Press |year=2000 |isbn=978-0-87113-800-2 |page=[https://archive.org/details/indiahistory00keay/page/132 132] |quote=The great era of all that is deemed classical in Indian literature, art and science was now dawning. It was this crescendo of creativity and scholarship, as much as ... political achievements of the Guptas, which would make their age so golden. |author-link=John Keay}}</ref> Scientific research deteriorated in these regions after the [[fall of the Western Roman Empire]] during the [[early middle ages]] (400 to 1000 CE), but in the [[Medieval renaissances]] ([[Carolingian Renaissance]], [[Ottonian Renaissance]] and the [[Renaissance of the 12th century]]) scholarship flourished again. Some Greek manuscripts lost in Western Europe were preserved and expanded upon in the Middle East during the [[Islamic Golden Age]]<ref name="Lindberg8">{{cite book |last=Lindberg |first=David C. |title=The beginnings of Western science: the European Scientific tradition in philosophical, religious, and institutional context |publisher=University of Chicago Press |year=2007 |isbn=978-0-226-48205-7 |edition=2nd |location=Chicago |pages=163–92 |chapter=Islamic science}}</ref> and later by the efforts of [[Greek scholars in the Renaissance|Byzantine Greek scholars]] who brought Greek manuscripts from the dying [[Byzantine Empire]] to Western Europe in the [[Renaissance]].

The recovery and assimilation of [[Ancient Greek literature|Greek works]] and [[Science in the medieval Islamic world|Islamic inquiries]] into Western Europe from the 10th to 13th century revived "[[natural philosophy]]",<ref name="Lindberg9">{{cite book |last=Lindberg |first=David C. |title=The beginnings of Western science: the European Scientific tradition in philosophical, religious, and institutional context |publisher=University of Chicago Press |year=2007 |isbn=978-0-226-48205-7 |edition=2nd |location=Chicago |pages=193–224 |chapter=The revival of learning in the West}}</ref><ref name="Lindberg10">{{cite book |last=Lindberg |first=David C. |title=The beginnings of Western science: the European Scientific tradition in philosophical, religious, and institutional context |publisher=University of Chicago Press |year=2007 |isbn=978-0-226-48205-7 |edition=2nd |location=Chicago |pages=225–53 |chapter=The recovery and assimilation of Greek and Islamic science}}</ref><ref>Sease, Virginia; Schmidt-Brabant, Manfrid. Thinkers, Saints, Heretics: Spiritual Paths of the Middle Ages. 2007. [https://books.google.com/books?id=8Lkzp-StZGUC&pg=PA80&dq=%22Everything+we+would+today+call+science+came+through+Islam%22&hl=en&newbks=1&newbks_redir=1&sa=X&ved=2ahUKEwiDpu3y096BAxX3VPEDHZplB_0Q6AF6BAgHEAI  Pages 80-81]. Retrieved 6 Oct. 2023</ref> which was later transformed by the [[Scientific Revolution]] that began in the 16th century<ref name="Principe2011">{{cite book |last=Principe |first=Lawrence M. |title=Scientific Revolution: A Very Short Introduction |publisher=Oxford University Press |year=2011 |isbn=978-0-19-956741-6 |edition= |location=New York |pages=1–3 |chapter=Introduction}}</ref> as new ideas and discoveries departed from previous Greek conceptions and traditions.<ref name="Lindberg14">{{cite book |last=Lindberg |first=David C. |title=The beginnings of Western science: the European Scientific tradition in philosophical, religious, and institutional context |publisher=University of Chicago Press |year=2007 |isbn=978-0-226-48205-7 |edition=2nd |location=Chicago |pages=357–368 |chapter=The legacy of ancient and medieval science}}</ref><ref name="Grant2007c">{{cite book |last=Grant |first=Edward |url=https://archive.org/details/historynaturalph00gran |title=A History of Natural Philosophy: From the Ancient World to the Nineteenth Century |publisher=Cambridge University Press |year=2007 |isbn=978-0-521-68957-1 |edition=|location=New York |pages=[https://archive.org/details/historynaturalph00gran/page/n289 274]–322 |chapter=Transformation of medieval natural philosophy from the early period modern period to the end of the nineteenth century |url-access=limited}}</ref> The [[scientific method]] soon played a greater role in knowledge creation and it was not until the [[19th century in science|19th century]] that many of the [[Institutionalisation|institutional]] and [[Professionalization|professional]] features of science began to take shape,<ref name="Cahan Natural Philosophy">{{cite book |title=From Natural Philosophy to the Sciences: Writing the History of Nineteenth-Century Science |date=2003 |publisher=University of Chicago Press |isbn=978-0-226-08928-7 |editor1-last=Cahan |editor1-first=David |location=Chicago}}</ref><ref name="Lightman 19th2">{{cite book |last1=Lightman |first1=Bernard |title=Wrestling with Nature: From Omens to Science |date=2011 |publisher=University of Chicago Press |isbn=978-0-226-31783-0 |editor1-last=Shank |editor1-first=Michael |location=Chicago |page=367 |chapter=13. Science and the Public |editor2-last=Numbers |editor2-first=Ronald |editor3-last=Harrison |editor3-first=Peter}}</ref> along with the changing of "natural philosophy" to "natural science".<ref>{{cite book |last1=Harrison |first1=Peter |title=The Territories of Science and Religion |date=2015 |publisher=University of Chicago Press |isbn=978-0-226-18451-7 |location=Chicago |pages=164–165 |quote=The changing character of those engaged in scientific endeavors was matched by a new nomenclature for their endeavors. The most conspicuous marker of this change was the replacement of "natural philosophy" by "natural science". In 1800 few had spoken of the "natural sciences" but by 1880, this expression had overtaken the traditional label "natural philosophy". The persistence of "natural philosophy" in the twentieth century is owing largely to historical references to a past practice (see figure 11). As should now be apparent, this was not simply the substitution of one term by another, but involved the jettisoning of a range of personal qualities relating to the conduct of philosophy and the living of the philosophical life. |author-link1=Peter Harrison (historian)}}</ref>

New knowledge in science is advanced by research from scientists who are motivated by [[curiosity]] about the world and a desire to solve problems.<ref name="macritchie2011">{{cite book |last=MacRitchie |first=Finlay |url=https://www.routledge.com/Scientific-Research-as-a-Career/MacRitchie/p/book/9781439869659 |title=Scientific Research as a Career |publisher=Routledge |year=2011 |isbn=978-1-4398-6965-9 |location=New York |pages=1–6 |chapter=Introduction |access-date=May 5, 2021 |archive-url=https://web.archive.org/web/20210505074020/https://www.routledge.com/Scientific-Research-as-a-Career/MacRitchie/p/book/9781439869659 |archive-date=May 5, 2021 |url-status=live}}</ref><ref name="marder2011">{{cite book |last=Marder |first=Michael P. |url=https://www.cambridge.org/core/books/research-methods-for-science/1C04E5D747781B68C52A79EE86BF584B |title=Research Methods for Science |publisher=Cambridge University Press |year=2011 |isbn=978-0-521-14584-8 |location=New York |pages=1–17 |chapter=Curiosity and research |access-date=May 5, 2021 |archive-url=https://web.archive.org/web/20210505001547/https://www.cambridge.org/core/books/research-methods-for-science/1C04E5D747781B68C52A79EE86BF584B |archive-date=May 5, 2021 |url-status=live}}</ref> Contemporary scientific research is highly collaborative and is usually done by teams in [[Academic institution|academic]] and [[Research institute|research institutions]],<ref name="deridder2020">{{cite book |last=de Ridder |first=Jeroen |url=https://www.routledge.com/What-is-Scientific-Knowledge-An-Introduction-to-Contemporary-Epistemology/McCain-Kampourakis/p/book/9781138570153 |title=What is Scientific Knowledge? An Introduction to Contemporary Epistemology of Science |publisher=Routledge |year=2020 |isbn=978-1-138-57016-0 |editor-last1=McCain |editor-first1=Kevin |location=New York |pages=3–17 |chapter=How many scientists does it take to have knowledge? |access-date=May 5, 2021 |editor-last2=Kampourakis |editor-first2=Kostas |archive-url=https://web.archive.org/web/20210505044353/https://www.routledge.com/What-is-Scientific-Knowledge-An-Introduction-to-Contemporary-Epistemology/McCain-Kampourakis/p/book/9781138570153 |archive-date=May 5, 2021 |url-status=live}}</ref> [[Government agency|government agencies]], and [[Company|companies]].<ref name="lindberg2007h">{{cite book |last=Lindberg |first=David C. |title=The beginnings of Western science: the European Scientific tradition in philosophical, religious, and institutional context |publisher=University of Chicago Press |year=2007 |isbn=978-0-226-48205-7 |edition=2nd|location=Chicago |pages=163–192 |chapter=Islamic science}}</ref><ref name="gertner2013">{{cite book |last=Szycher |first=Michael |url=https://www.routledge.com/Commercialization-Secrets-for-Scientists-and-Engineers/Szycher/p/book/9781498730600 |title=Commercialization Secrets for Scientists and Engineers |publisher=Routledge |year=2016 |isbn=978-1-138-40741-1 |location=New York |pages=159–176 |chapter=Establishing your dream team |access-date=May 5, 2021 |archive-url=https://web.archive.org/web/20210818032914/https://www.routledge.com/Commercialization-Secrets-for-Scientists-and-Engineers/Szycher/p/book/9781498730600 |archive-date=August 18, 2021 |url-status=live}}</ref> The practical impact of their work has led to the emergence of [[Science policy|science policies]] that seek to influence the scientific enterprise by prioritizing the [[Responsible Research and Innovation|ethical and moral development]] of [[Product (business)|commercial products]], [[Weapon|armaments]], health care, [[public infrastructure]], and [[environmental protection]].

== Etymology ==
The word ''science'' has been used in [[Middle English]] since the 14th century in the sense of "the state of knowing". The word was borrowed from the [[Anglo-Norman language]] as the suffix {{lang|xno|-cience}}, which was borrowed from the [[Latin]] word {{lang|la|[[wikt:scientia|scientia]]}}, meaning "knowledge, awareness, understanding". It is a [[Morphological derivation|noun derivative]] of the Latin {{lang|la|[[wikt:sciens|sciens]]}} meaning "knowing", and undisputedly derived from the Latin {{lang|la|[[wikt:scio|sciō]]}}, the [[present participle]] ''{{lang|la|[[wikt:scire|scīre]]}}'', meaning "to know".<ref name="webster">{{cite dictionary |title=science |encyclopedia=Merriam-Webster Online Dictionary |publisher=[[Merriam-Webster]], Inc |url=http://www.merriam-webster.com/dictionary/science |access-date=October 16, 2011 |archive-url=https://web.archive.org/web/20190901035713/https://www.merriam-webster.com/dictionary/science |archive-date=September 1, 2019 |url-status=live}}</ref>

There are many hypotheses for ''science''<nowiki/>'s ultimate word origin. According to [[Michiel de Vaan]], [[Dutch people|Dutch]] linguist and [[Indo-European studies|Indo-Europeanist]], {{lang|la|sciō}} may have its origin in the [[Proto-Italic language]] as {{lang|itc-x-proto|*skije-}} or {{lang|itc-x-proto|*skijo-}} meaning "to know", which may originate from [[Proto-Indo-European language]] as ''{{PIE|*skh<sub>1</sub>-ie}}, {{PIE|*skh<sub>1</sub>-io}}'', meaning "to incise". The ''[[Lexikon der indogermanischen Verben]]'' proposed {{lang|la|sciō}} is a [[back-formation]] of {{lang|la|[[wikt:nescire|nescīre]]}}, meaning "to not know, be unfamiliar with", which may derive from Proto-Indo-European ''{{PIE|[[wikt:Reconstruction:Proto-Indo-European/sek-|*sekH-]]}}'' in Latin {{lang|la|[[wikt:secare|secāre]]}}, or ''{{PIE|*skh<sub>2</sub>-}}'', from ''{{PIE|*sḱʰeh2(i)-}}'' meaning "to cut".<ref>{{Cite encyclopedia |year=2008 |title=sciō |encyclopedia=Etymological Dictionary of Latin and the other Italic Languages |url=https://archive.org/details/m-de-vaan-2008-etymological-dictionary-of-latin-and-the-other-italic-languages/page/544/ |last=Vaan |first=Michiel de |author-link=Michiel de Vaan |series=[[Indo-European Etymological Dictionary]] |pages=545 |isbn=978-90-04-16797-1}}</ref><!-- I honestly do nott understand some of the last sentences in the source -->

In the past, science was a synonym for "knowledge" or "study", in keeping with its [[Latin]] origin. A person who conducted scientific research was called a "natural philosopher" or "man of science".<ref>{{Cite book |last=Cahan |first=David |url=https://www.worldcat.org/oclc/51330464 |title=From natural philosophy to the sciences : writing the history of nineteenth-century science |date=2003 |publisher=University of Chicago Press |isbn=0-226-08927-4 |location=Chicago |oclc=51330464 |access-date=May 31, 2022 |archive-date=May 31, 2022 |archive-url=https://web.archive.org/web/20220531071721/https://www.worldcat.org/title/from-natural-philosophy-to-the-sciences-writing-the-history-of-nineteenth-century-science/oclc/51330464 |url-status=live|pages=3–15}}</ref> In 1834, [[William Whewell]] introduced the term ''scientist'' in a review of [[Mary Somerville]]'s book ''[[On the Connexion of the Physical Sciences]]'',<ref name="Whewell scientist">{{Cite journal |last=Ross |first=Sydney |year=1962 |title=Scientist: The story of a word |journal=[[Annals of Science]] |volume=18 |issue=2 |pages=65–85 |doi=10.1080/00033796200202722 |doi-access=free}}</ref> crediting it to "some ingenious gentleman" (possibly himself).<ref>{{cite OED|scientist}}</ref>

== History ==
{{Main|History of science}}

=== Early history<span class="anchor" id="Earliest roots"></span> ===
{{Main|History of science in early cultures}}
[[File:Plimpton_322.jpg|thumb|The [[Plimpton 322|Plimpton 322 tablet]] by the [[Babylonia]]ns records [[Pythagorean triple]]s, written in about 1800 BCE|alt=Clay tablet with markings, three columns for numbers and one for ordinals]]
Science has no single origin. Rather, systematic methods emerged gradually over the course of tens of thousands of years,<ref name="cognitive-basis">{{Citation |last=Carruthers |first=Peter |title=The roots of scientific reasoning: infancy, modularity and the art of tracking |date=2002-05-02 |work=The Cognitive Basis of Science |pages=73–96 |editor-last=Carruthers |editor-first=Peter |publisher=Cambridge University Press |doi=10.1017/cbo9780511613517.005 |isbn=978-0-521-81229-0 |editor2-last=Stich |editor2-first=Stephen |editor3-last=Siegal |editor3-first=Michael}}</ref><ref name="causal-cognition">{{Cite journal |last1=Lombard |first1=Marlize |last2=Gärdenfors |first2=Peter |year=2017 |title=Tracking the Evolution of Causal Cognition in Humans |journal=Journal of Anthropological Sciences |volume=95 |issue=95 |pages=219–234 |doi=10.4436/JASS.95006 |pmid=28489015 |issn=1827-4765}}</ref> taking different forms around the world, and few details are known about the very earliest developments. [[Women in science|Women]] likely played a central role in prehistoric science,<ref>{{cite book |last1=Graeber |first1=David |last2=Wengrow |first2=David |author-link1=David Graeber |author-link2=David Wengrow |date=2021 |title=[[The Dawn of Everything]] |page=248 }}</ref> as did [[Ritual#Religious perspectives|religious rituals]].<ref>{{cite journal |title=The Faerie Smith Meets the Bronze Industry: Magic Versus Science in the Interpretation of Prehistoric Metal-Making |jstor=124782 |last1=Budd |first1=Paul |last2=Taylor |first2=Timothy |journal=World Archaeology |year=1995 |volume=27 |issue=1 |pages=133–143 |doi=10.1080/00438243.1995.9980297 }}</ref> Some scholars use the term "[[protoscience]]" to label activities in the past that resemble modern science in some but not all features;<ref>{{cite book|last=Tuomela |first=Raimo |year=1987 |chapter=Science, Protoscience, and Pseudoscience |editor-last1=Pitt |editor-first1=J.C. |editor-last2=Pera |editor-first2=M. |title=Rational Changes in Science |series=Boston Studies in the Philosophy of Science |volume=98 |pages=83–101 |publisher=Springer |location=Dordrecht |doi=10.1007/978-94-009-3779-6_4|isbn=978-94-010-8181-8 }}</ref><ref>{{cite journal|doi=10.1086/599864 |first=Pamela H. |last=Smith |title=Science on the Move: Recent Trends in the History of Early Modern Science |journal=Renaissance Quarterly |volume=62 |number=2 |year=2009 |pages=345–375|pmid=19750597 |s2cid=43643053 }}</ref><ref>{{Cite journal |last=Fleck |first=Robert |date=March 2021 |title=Fundamental Themes in Physics from the History of Art |journal=Physics in Perspective |language=en |volume=23 |issue=1 |pages=25–48 |doi=10.1007/s00016-020-00269-7 |bibcode=2021PhP....23...25F |s2cid=253597172 |issn=1422-6944|doi-access=free }}</ref> however, this label has also been criticized as denigrating,<ref>{{cite encyclopedia |last=Scott |first=Colin |encyclopedia=The Postcolonial Science and Technology Studies Reader |title=Science for the West, Myth for the Rest? |publisher=Duke University Press |location=Durham |editor-last=Harding |editor-first=Sandra |isbn=978-0-8223-4936-5 |year=2011 |oclc=700406626 |page=175 |doi=10.2307/j.ctv11g96cc.16 }}</ref> or too suggestive of [[Presentism (historical analysis)|presentism]], thinking about those activities only in relation to modern categories.<ref>{{cite journal|doi=10.1177/007327531205000203 |first=Peter |last=Dear |title=Historiography of Not-So-Recent Science |journal=History of Science |volume=50 |number=2 |year=2012 |pages=197–211|s2cid=141599452 }}</ref>

Direct evidence for scientific processes becomes clearer with the advent of [[writing systems]] in early civilizations like [[Ancient Egypt]] and [[Mesopotamia]], creating the earliest written records in the [[history of science]] in around 3000 to 1200 [[Common Era|BCE]].<ref name=Lindberg2007a/>{{rp|pp=12–15}}<ref name="Grant2007a" /> Although the words and concepts of "science" and "nature" were not part of the conceptual landscape at the time, the ancient Egyptians and Mesopotamians made contributions that would later find a place in Greek and medieval science: mathematics, astronomy, and medicine.<ref>{{cite book|last1= Rochberg|first1= Francesca|author-link=Francesca Rochberg|editor1-last= Shank|editor1-first= Michael|editor2-last= Numbers|editor2-first= Ronald|editor3-last= Harrison|editor3-first= Peter|title= Wrestling with Nature: From Omens to Science|date= 2011|publisher= University of Chicago Press|location=Chicago|isbn= 978-0-226-31783-0|page= 9|chapter= Ch.1 Natural Knowledge in Ancient Mesopotamia}}</ref><ref name=Lindberg2007a/>{{rp|p=12}} From the 3rd millennium BCE, the ancient Egyptians developed a [[Decimal#Origin|decimal numbering system]],<ref>{{Cite book |last=Krebs |first=Robert E. |title=Groundbreaking Scientific Experiments, Inventions, and Discoveries of the Middle Ages and the Renaissance |publisher=[[Greenwood Publishing Group]] |year=2004 |isbn=978-0313324338 |pages=127}}</ref> solved practical problems using [[geometry]],<ref>{{cite book |last1=Erlich |first1=Ḥaggai |author-link=Haggai Erlich |url=https://books.google.com/books?id=LcsJosc239YC&q=egyptian%20geometry%20Nile&pg=PA80 |title=The Nile: Histories, Cultures, Myths |last2=Gershoni |first2=Israel |date=2000 |publisher=Lynne Rienner Publishers |isbn=978-1-55587-672-2 |pages=80–81 |language=en |quote=The Nile occupied an important position in Egyptian culture; it influenced the development of mathematics, geography, and the calendar; Egyptian geometry advanced due to the practice of land measurement "because the overflow of the Nile caused the boundary of each person's land to disappear." |access-date=January 9, 2020 |archive-date=May 31, 2022 |archive-url=https://web.archive.org/web/20220531025639/https://books.google.com/books?id=LcsJosc239YC&q=egyptian+geometry+Nile&pg=PA80 |url-status=live }}</ref> and developed a [[Egyptian calendar|calendar]].<ref>{{Cite web |title=Telling Time in Ancient Egypt |url=https://www.metmuseum.org/toah/hd/tell/hd_tell.htm |access-date=May 27, 2022 |website=The Met's Heilbrunn Timeline of Art History |archive-date=March 3, 2022 |archive-url=https://web.archive.org/web/20220303133140/https://www.metmuseum.org/toah/hd/tell/hd_tell.htm |url-status=live }}</ref> Their healing therapies involved drug treatments and the supernatural, such as prayers, [[incantation]]s, and rituals.<ref name=Lindberg2007a/>{{rp|p=9}}

The ancient [[Mesopotamia]]ns used knowledge about the properties of various natural chemicals for manufacturing [[pottery]], [[faience]], glass, soap, metals, [[lime plaster]], and waterproofing.<ref name="McIntosh2005">{{cite book|last1= McIntosh|first1= Jane R.|author-link= Jane McIntosh|title= Ancient Mesopotamia: New Perspectives|date= 2005|publisher= ABC-CLIO|location= Santa Barbara, California, Denver, Colorado, and Oxford, England|isbn= 978-1-57607-966-9|pages= 273–76|url= https://books.google.com/books?id=9veK7E2JwkUC&q=science+in+ancient+Mesopotamia|access-date= October 20, 2020|archive-date= February 5, 2021|archive-url= https://web.archive.org/web/20210205162758/https://books.google.com/books?id=9veK7E2JwkUC&q=science+in+ancient+Mesopotamia|url-status= live}}</ref> They studied [[animal physiology]], [[anatomy]], [[animal behavior|behavior]], and [[astrology]] for [[divination|divinatory]] purposes.<ref>{{Cite journal |title= Scientific Astronomy in Antiquity|last= Aaboe|first= Asger|author-link= Asger Aaboe|journal= [[Philosophical Transactions of the Royal Society]]|volume= 276|issue= 1257|date= May 2, 1974|pages= 21–42|doi=10.1098/rsta.1974.0007|bibcode=1974RSPTA.276...21A|jstor= 74272|s2cid= 122508567}}</ref> The Mesopotamians had an [[Babylonian medicine|intense interest in medicine]]<ref name="McIntosh2005" /> and the earliest [[medical prescription]]s appeared in [[Sumerian language|Sumerian]] during the [[Third Dynasty of Ur]].<ref>{{cite journal |title= Medicine, Surgery, and Public Health in Ancient Mesopotamia |first= R D. |last= Biggs |journal=Journal of Assyrian Academic Studies |volume= 19 |number= 1 |year= 2005 |pages= 7–18}}</ref> They seem to have studied scientific subjects which had practical or religious applications and had little interest in satisfying curiosity.<ref name="McIntosh2005" />

=== Classical antiquity ===
{{Main|Science in classical antiquity}}
[[File:MANNapoli 124545 plato's academy mosaic.jpg|left|thumb|[[Plato's Academy mosaic]], made between 100 BCE to 79 AD, shows many Greek philosophers and scholars|alt=Framed mosaic of philosophers gathering around and conversing]]
In [[classical antiquity]], there is no real ancient analog of a modern scientist. Instead, well-educated, usually upper-class, and almost universally male individuals performed various investigations into nature whenever they could afford the time.<ref name="Lehoux">{{cite book|last1= Lehoux|first1= Daryn|editor1-last= Shank|editor1-first= Michael|editor2-last= Numbers|editor2-first= Ronald|editor3-last= Harrison|editor3-first= Peter|title= Wrestling with Nature: From Omens to Science|date= 2011|publisher= University of Chicago Press|location= Chicago|isbn= 978-0-226-31783-0|page= 39|chapter= 2. Natural Knowledge in the Classical World}}</ref> Before the invention or discovery of the [[concept]] of ''[[phusis]]'' or nature by the [[pre-Socratic philosopher]]s, the same words tend to be used to describe the natural "way" in which a plant grows,<ref name=naddaf>An account of the pre-Socratic use of the concept of φύσις may be found in {{cite book|last=Naddaf|first=Gerard|year=2006|title=The Greek Concept of Nature|publisher=SUNY Press|postscript=,}} and in {{cite journal |last1=Ducarme |first1=Frédéric |last2=Couvet |first2=Denis |year=2020 |title=What does 'nature' mean? |journal=[[Palgrave Communications]] |volume=6 |issue=14 |publisher=[[Springer Nature]] |doi=10.1057/s41599-020-0390-y |doi-access=free |url=https://hal.science/hal-02554932/file/s41599-020-0390-y.pdf }} The word φύσις, while first used in connection with a plant in Homer, occurs early in Greek philosophy, and in several senses. Generally, these senses match rather well the current senses in which the English word ''nature'' is used, as confirmed by {{cite book|last=Guthrie|first=W.K.C.|title=Presocratic Tradition from Parmenides to Democritus|postscript=none}} (volume 2 of his ''History of Greek Philosophy''), Cambridge UP, 1965.</ref> and the "way" in which, for example, one tribe worships a particular god. For this reason, it is claimed that these men were the first philosophers in the strict sense and the first to clearly distinguish "nature" and "convention".<ref>{{Cite book |last1=Strauss |first1=Leo |url=https://books.google.com/books?id=cpx2j0TumyIC |title=An Introduction to Political Philosophy: Ten Essays by Leo Strauss |last2=Gildin |first2=Hilail |publisher=[[Wayne State University Press]] |isbn=978-0814319024 |publication-date=August 1, 1989 |chapter=Progress or Return? The Contemporary Crisis in Western Education |year=1989 |access-date=May 30, 2022 |archive-date=May 31, 2022 |archive-url=https://web.archive.org/web/20220531025640/https://books.google.com.vn/books/about/An_Introduction_to_Political_Philosophy.html?id=cpx2j0TumyIC |url-status=live|page=209}}</ref>

The early [[Ancient Greek philosophy|Greek philosophers]] of the Milesian school, which was founded by [[Thales of Miletus]] and later continued by his successors [[Anaximander]] and [[Anaximenes of Miletus|Anaximenes]], were the first to attempt to explain [[List of natural phenomena|natural phenomena]] without relying on the [[supernatural]].<ref name="O'Grady">{{cite book|last1= O'Grady|first1= Patricia F.|author-link=Patricia O'Grady|title= Thales of Miletus: The Beginnings of Western Science and Philosophy|date= 2016|publisher= Routledge|location= New York City, New York and London, England|isbn= 978-0-7546-0533-1|page= 245|url= https://books.google.com/books?id=ZTUlDwAAQBAJ&q=Thales+of+Miletus+first+scientist&pg=PA245|access-date= October 20, 2020|archive-date= March 31, 2021|archive-url= https://web.archive.org/web/20210331144842/https://books.google.com/books?id=ZTUlDwAAQBAJ&q=Thales+of+Miletus+first+scientist&pg=PA245|url-status= live}}</ref> The [[Pythagoreanism|Pythagoreans]] developed a complex number philosophy<ref name="Burkert1972">{{cite book|last= Burkert|first= Walter|author-link= Walter Burkert|date= June 1, 1972|title= Lore and Science in Ancient Pythagoreanism|url= https://books.google.com/books?id=0qqp4Vk1zG0C&q=Pythagoreanism|location= Cambridge, Massachusetts|publisher= Harvard University Press|isbn= 978-0-674-53918-1|url-status=live|archive-url= https://web.archive.org/web/20180129145253/https://books.google.com/books?id=0qqp4Vk1zG0C&printsec=frontcover&dq=Pythagoreanism&hl=en&sa=X&ved=0ahUKEwiX4Y3W9bfXAhXBeSYKHfBxCG4Q6AEIMTAC#v=onepage&q=Pythagoreanism&f=false|archive-date= January 29, 2018}}</ref>{{rp|467–68}} and contributed significantly to the development of mathematical science.<ref name="Burkert1972" />{{rp|465}} The [[atomism|theory of atoms]] was developed by the Greek philosopher [[Leucippus]] and his student [[Democritus]].<ref>{{Cite book|last1= Pullman|first1= Bernard|title= The Atom in the History of Human Thought|date= 1998|isbn= 978-0-19-515040-7|pages= 31–33|publisher= Oxford University Press|url= https://books.google.com/books?id=IQs5hur-BpgC&q=Leucippus+Democritus+atom&pg=PA56|bibcode= 1998ahht.book.....P|access-date= October 20, 2020|archive-date= February 5, 2021|archive-url= https://web.archive.org/web/20210205165029/https://books.google.com/books?id=IQs5hur-BpgC&q=Leucippus+Democritus+atom&pg=PA56|url-status= live}}</ref><ref>{{cite book|editor1-last= Cohen|editor1-first= Henri|editor2-last= Lefebvre|editor2-first= Claire|title= Handbook of Categorization in Cognitive Science|date= 2017|publisher= Elsevier|location= Amsterdam, the Netherlands|isbn= 978-0-08-101107-2|page= 427|edition= 2nd|url= https://books.google.com/books?id=zIrCDQAAQBAJ&q=Leucippus+Democritus+atom&pg=PA427|access-date= October 20, 2020|archive-date= February 5, 2021|archive-url= https://web.archive.org/web/20210205162707/https://books.google.com/books?id=zIrCDQAAQBAJ&q=Leucippus+Democritus+atom&pg=PA427|url-status= live}}</ref> Later, [[Epicurus]] would develop a full natural cosmology based on atomism, and would adopt a "canon" (ruler, standard) which established physical criteria or standards of scientific truth.<ref name=canon >[[Lucretius]] (fl. 1st c. BCE) ''[[De rerum natura]]''</ref> The Greek doctor [[Hippocrates]] established the tradition of systematic medical science<ref>{{cite book|last= Margotta|first= Roberto|date= 1968|title= The Story of Medicine|url= https://books.google.com/books?id=vFZrAAAAMAAJ|location= New York City, New York|publisher= [[Golden Press]]|access-date= November 18, 2020|archive-date= February 5, 2021|archive-url= https://web.archive.org/web/20210205161915/https://books.google.com/books?id=vFZrAAAAMAAJ|url-status= live}}</ref><ref name="Touwaide2005">{{cite book|last1= Touwaide|first1= Alain|title= Medieval Science, Technology, and Medicine: An Encyclopedia|date= 2005|editor1-last= Glick|editor1-first= Thomas F.|editor2-last= Livesey|editor2-first= Steven|editor3-last= Wallis|editor3-first= Faith|publisher= Routledge|location= New York City, New York and London, England|isbn= 978-0-415-96930-7|page= 224|url= https://books.google.com/books?id=77y2AgAAQBAJ&q=Hippocrates+medical+science&pg=PA224|access-date= October 20, 2020|archive-date= February 6, 2021|archive-url= https://web.archive.org/web/20210206081848/https://books.google.com/books?id=77y2AgAAQBAJ&q=Hippocrates+medical+science&pg=PA224|url-status= live}}</ref> and is known as "[[List of persons considered father or mother of a scientific field#Medicine and physiology|The Father of Medicine]]".<ref>{{cite book|last1= Leff|first1= Samuel|last2= Leff|first2= Vera|date= 1956|title= From Witchcraft to World Health|url= https://books.google.com/books?id=HjNrAAAAMAAJ|location= London, England|publisher= [[Macmillan Publishers|Macmillan]]|access-date= August 23, 2020|archive-date= February 5, 2021|archive-url= https://web.archive.org/web/20210205162709/https://books.google.com/books?id=HjNrAAAAMAAJ|url-status= live}}</ref>

A turning point in the history of early philosophical science was [[Socrates]]' example of applying philosophy to the study of human matters, including human nature, the nature of political communities, and human knowledge itself. The [[Socratic method]] as documented by [[Plato]]'s dialogues is a [[dialectic]] method of hypothesis elimination: better hypotheses are found by steadily identifying and eliminating those that lead to contradictions. The Socratic method searches for general commonly-held truths that shape beliefs and scrutinizes them for consistency.<ref>{{cite web |url= https://www.perseus.tufts.edu/hopper/text?doc=Perseus%3Atext%3A1999.01.0170%3Atext%3DApol.%3Apage%3D17 |title= Plato, Apology| page= 17 |access-date= November 1, 2017 |url-status=live |archive-url= https://web.archive.org/web/20180129145253/http://www.perseus.tufts.edu/hopper/text?doc=Perseus%3Atext%3A1999.01.0170%3Atext%3DApol.%3Apage%3D17 |archive-date= January 29, 2018 }}</ref> Socrates criticized the older type of study of physics as too purely speculative and lacking in [[self-criticism]].<ref>{{cite web |url= https://www.perseus.tufts.edu/hopper/text?doc=Perseus%3Atext%3A1999.01.0170%3Atext%3DApol.%3Apage%3D27 |title= Plato, Apology| page = 27 |access-date= November 1, 2017 |url-status=live |archive-url= https://web.archive.org/web/20180129145253/http://www.perseus.tufts.edu/hopper/text?doc=Perseus%3Atext%3A1999.01.0170%3Atext%3DApol.%3Apage%3D27 |archive-date= January 29, 2018 }}</ref>

[[Aristotle]] in the 4th century BCE created a systematic program of [[teleological]] philosophy.<ref>{{cite book|author1= Aristotle|title= Nicomachean Ethics|edition= H. Rackham|url= https://www.perseus.tufts.edu/hopper/text?doc=Perseus%3Atext%3A1999.01.0054%3Abekker%20page%3D1139b|url-status= live|archive-url= https://web.archive.org/web/20120317140402/http://www.perseus.tufts.edu/hopper/text?doc=|archive-date= March 17, 2012|access-date= September 22, 2010|at=1139b}}</ref> In the 3rd century BCE, Greek astronomer [[Aristarchus of Samos]] was the first to propose a [[Heliocentrism|heliocentric model]] of the universe, with the [[Sun]] at the center and all the planets orbiting it.<ref name="McClellan2015">{{cite book|last1= McClellan III|first1= James E.|last2= Dorn|first2= Harold|title= Science and Technology in World History: An Introduction|date= 2015|publisher= Johns Hopkins University Press|location= Baltimore, Maryland|isbn= 978-1-4214-1776-9|pages= 99–100|url= https://books.google.com/books?id=ah1ECwAAQBAJ&q=Aristarchus+heliocentrism&pg=PA99|access-date= October 20, 2020|archive-date= February 6, 2021|archive-url= https://web.archive.org/web/20210206081851/https://books.google.com/books?id=ah1ECwAAQBAJ&q=Aristarchus+heliocentrism&pg=PA99|url-status= live}}</ref> Aristarchus's model was widely rejected because it was believed to violate the laws of physics,<ref name="McClellan2015" /> while Ptolemy's ''[[Almagest]]'', which contains a geocentric description of the [[Solar System]], was accepted through the early Renaissance instead.<ref name="Graßhoff">{{Cite book|last=Graßhoff|first=Gerd|url=http://link.springer.com/10.1007/978-1-4612-4468-4|title=The History of Ptolemy's Star Catalogue|date=1990|publisher=Springer New York|isbn=978-1-4612-8788-9|series=Studies in the History of Mathematics and Physical Sciences|volume=14|location=New York, NY|doi=10.1007/978-1-4612-4468-4|access-date=May 27, 2022|archive-date=May 30, 2022|archive-url=https://web.archive.org/web/20220530023947/https://link.springer.com/book/10.1007/978-1-4612-4468-4|url-status=live}}</ref><ref name=Hoffmann>{{Cite book|last=Hoffmann|first=Susanne M.|url=http://link.springer.com/10.1007/978-3-658-18683-8|title=Hipparchs Himmelsglobus|date=2017|publisher=Springer Fachmedien Wiesbaden|isbn=978-3-658-18682-1|location=Wiesbaden|language=de|doi=10.1007/978-3-658-18683-8|bibcode=2017hihi.book.....H |access-date=May 27, 2022|archive-date=May 30, 2022|archive-url=https://web.archive.org/web/20220530023947/https://link.springer.com/book/10.1007/978-3-658-18683-8|url-status=live}}</ref> The inventor and mathematician [[Archimedes|Archimedes of Syracuse]] made major contributions to the beginnings of [[calculus]].<ref name="Edwards1979">{{cite book|last1= Edwards|first1= C.H. Jr.|title= The Historical Development of the Calculus|date= 1979|publisher= Springer-Verlag|location= New York City, New York|isbn= 978-0-387-94313-8|page= 75|edition= |url= https://books.google.com/books?id=ilrlBwAAQBAJ&q=Archimedes+calculus&pg=PA75|access-date= October 20, 2020|archive-date= February 5, 2021|archive-url= https://web.archive.org/web/20210205165030/https://books.google.com/books?id=ilrlBwAAQBAJ&q=Archimedes+calculus&pg=PA75|url-status= live}}</ref> [[Pliny the Elder]] was a Roman writer and polymath, who wrote the seminal encyclopedia ''[[Natural History (Pliny)|Natural History]]''.<ref name="Lawson2004">{{cite book|last1= Lawson|first1= Russell M.|title= Science in the Ancient World: An Encyclopedia|date= 2004|publisher= ABC-CLIO|location= Santa Barbara, California|isbn= 978-1-85109-539-1|pages= 190–91|url= https://books.google.com/books?id=1AY1ALzh9V0C&q=Pliny+the+Elder+encyclopedia&pg=PA190|access-date= October 20, 2020|archive-date= February 5, 2021|archive-url= https://web.archive.org/web/20210205165032/https://books.google.com/books?id=1AY1ALzh9V0C&q=Pliny+the+Elder+encyclopedia&pg=PA190|url-status= live}}</ref><ref>{{cite book|last1= Murphy|first1= Trevor Morgan|title= Pliny the Elder's Natural History: The Empire in the Encyclopedia|date= 2004|publisher= Oxford University Press|location= Oxford, England|isbn= 978-0-19-926288-5|page= 1|url= https://books.google.com/books?id=6NC_T_tG9lQC&q=Pliny+the+Elder+encyclopedia|access-date= October 20, 2020|archive-date= February 6, 2021|archive-url= https://web.archive.org/web/20210206081849/https://books.google.com/books?id=6NC_T_tG9lQC&q=Pliny+the+Elder+encyclopedia|url-status= live}}</ref><ref>{{cite book|last1= Doody|first1= Aude|title= Pliny's Encyclopedia: The Reception of the Natural History|date= 2010|publisher= Cambridge University Press|location= Cambridge, England|isbn= 978-1-139-48453-4|page= 1|url= https://books.google.com/books?id=YoEhAwAAQBAJ&q=Pliny+the+Elder+encyclopedia|access-date= October 20, 2020|archive-date= March 31, 2021|archive-url= https://web.archive.org/web/20210331144844/https://books.google.com/books?id=YoEhAwAAQBAJ&q=Pliny+the+Elder+encyclopedia|url-status= live}}</ref>

[[Positional notation]] for representing numbers likely emerged between the 3rd and 5th centuries CE along Indian trade routes. This numeral system made efficient [[arithmetic]] operations more accessible and would eventually become standard for mathematics worldwide.<ref>{{Cite book |last=Conner |first=Clifford D. |title=A People's History of Science: Miners, Midwives, and "Low Mechanicks" |date=2005 |publisher=Nation Books |isbn=1-56025-748-2 |location=New York |oclc=62164511 |pages=72–74}}</ref>

=== Middle Ages ===
{{Main|History of science#Middle Ages}}
[[File:ViennaDioscoridesEndpaperPeacock.jpg|thumb|The first page of [[Vienna Dioscurides]] depicts a [[peacock]], made in the 6th century|alt=Picture of a peacock on very old paper]]
Due to the [[Fall of the Western Roman Empire|collapse of the Western Roman Empire]], the 5th century saw an intellectual decline and knowledge of [[History of science in classical antiquity|Greek conceptions of the world]] deteriorated in Western Europe.<ref name=Lindberg2007a/>{{rp|p=194}} During the period, Latin encyclopedists such as [[Isidore of Seville]] preserved the majority of general ancient knowledge.<ref name="Grant1996">{{cite book |last1=Grant |first1=Edward |url=https://books.google.com/books?id=YyvmEyX6rZgC |title=The Foundations of Modern Science in the Middle Ages: Their Religious, Institutional and Intellectual Contexts |publisher=Cambridge University Press |year=1996 |isbn=978-0-521-56762-6 |series=Cambridge Studies in the History of Science |pages=7–17 |access-date=November 9, 2018 |archive-url=https://web.archive.org/web/20190821163234/https://books.google.com/books?id=YyvmEyX6rZgC |archive-date=August 21, 2019 |url-status=live}}</ref> In contrast, because the [[Byzantine Empire]] resisted attacks from invaders, they were able to preserve and improve prior learning.<ref name=Lindberg2007a/>{{rp|p=159}} [[John Philoponus]], a Byzantine scholar in the 500s, started to question Aristotle's teaching of physics, introducing the [[theory of impetus]].<ref name=Lindberg2007a/>{{rp|pp=307, 311, 363, 402}} His criticism served as an inspiration to medieval scholars and Galileo Galilei, who extensively cited his works ten centuries later.<ref name=Lindberg2007a/>{{rp|pp=307–308}}<ref>{{cite book|url= https://plato.stanford.edu/archives/spr2016/entries/philoponus/|title= The Stanford Encyclopedia of Philosophy|first= Christian|last= Wildberg|editor-first= Edward N.|editor-last= Zalta|date= May 1, 2018|publisher= Metaphysics Research Lab, Stanford University|via= Stanford Encyclopedia of Philosophy|access-date= May 1, 2018|archive-date= August 22, 2019|archive-url= https://web.archive.org/web/20190822110331/https://plato.stanford.edu/archives/spr2016/entries/philoponus/|url-status= live}}</ref>

During [[late antiquity]] and the [[early Middle Ages]], natural phenomena were mainly examined via the Aristotelian approach. The approach includes Aristotle's [[four causes]]: material, formal, moving, and final cause.<ref>{{Cite book |chapter=Aristotle on Causality |last=Falcon |first=Andrea |editor-last=Zalta |date=2019 |editor-first=Edward |title=Stanford Encyclopedia of Philosophy |edition=Spring 2019 |publisher=Metaphysics Research Lab, Stanford University |chapter-url=https://plato.stanford.edu/archives/spr2019/entries/aristotle-causality/#FouCau |access-date=October 3, 2020 |archive-date=October 9, 2020 |archive-url=https://web.archive.org/web/20201009032459/https://plato.stanford.edu/archives/spr2019/entries/aristotle-causality/#FouCau |url-status=live }}</ref> Many Greek classical texts were preserved by the [[Byzantine empire]] and [[Arabic]] translations were done by groups such as the [[Nestorian schism|Nestorians]] and the [[Monophysitism|Monophysites]]. Under the [[Caliphate]], these Arabic translations were later improved and developed by Arabic scientists.<ref name="Grant2007b">{{cite book |last=Grant |first=Edward |url=https://archive.org/details/historynaturalph00gran |title=A History of Natural Philosophy: From the Ancient World to the Nineteenth Century |publisher=[[Cambridge University Press]] |year=2007 |isbn=978-0-521-68957-1 |pages=[https://archive.org/details/historynaturalph00gran/page/n77 62]–67 |chapter=Islam and the eastward shift of Aristotelian natural philosophy |url-access=limited}}</ref> By the 6th and 7th centuries, the neighboring [[Sasanian Empire|Sassanid Empire]] established the medical [[Academy of Gondishapur|Academy of Gondeshapur]], which is considered by Greek, Syriac, and Persian physicians as the most important medical center of the ancient world.<ref>{{Cite book|title= The Cambridge history of Iran|date= 1968–1991|publisher= University Press|last= Fisher|first= W.B. (William Bayne)|isbn= 978-0-521-20093-6|location= Cambridge|oclc= 745412}}</ref>

The [[House of Wisdom]] was established in [[Abbasid]]-era [[Baghdad]], [[Iraq]],<ref>{{cite encyclopedia|url= https://www.britannica.com/place/Bayt-al-Hikmah|title= Bayt al-Hikmah|encyclopedia= Encyclopædia Britannica|access-date= November 3, 2016|url-status=live|archive-url= https://web.archive.org/web/20161104043313/https://www.britannica.com/place/Bayt-al-Hikmah|archive-date= November 4, 2016}}</ref> where the Islamic study of [[Aristotelianism#Islamic world|Aristotelianism]] flourished<ref>{{Cite book |editor-last=Hossein Nasr |editor-first=Seyyed |title=History of Islamic Philosophy |title-link=History of Islamic Philosophy |editor-last2=Leaman |editor-first2=Oliver |publisher=[[Routledge]] |year=2001 |isbn=978-0415259347 |pages=165–167 |editor-link=Seyyed Hossein Nasr}}</ref> until the [[Mongol invasions]] in the 13th century. [[Ibn al-Haytham]], better known as Alhazen, began experimenting as a means to gain knowledge<ref name="toomer1964Review">{{cite journal |jstor=228328|last1= Toomer|first1= G.J.|title= Reviewed work: Ibn al-Haythams Weg zur Physik, Matthias Schramm|journal= Isis|volume= 55|issue= 4|pages= 463–65|year= 1964|doi=10.1086/349914}} See p. 464: "Schramm sums up [Ibn Al-Haytham's] achievement in the development of scientific method.", p. 465: "Schramm has demonstrated .. beyond any dispute that Ibn al-Haytham is a major figure in the Islamic scientific tradition, particularly in the creation of experimental techniques." p. 465: "only when the influence of ibn al-Haytam and others on the mainstream of later medieval physical writings has been seriously investigated can Schramm's claim that ibn al-Haytam was the true founder of modern physics be evaluated."</ref><ref name=Cohen2010b>{{cite book|last1= Cohen|first1= H. Floris|author-link= Floris Cohen|chapter = Greek nature knowledge transplanted: The Islamic world|title= How modern science came into the world. Four civilizations, one 17th-century breakthrough|date= 2010|pages=99–156|publisher=Amsterdam University Press|location= Amsterdam|isbn= 978-90-8964-239-4|edition= 2nd}}</ref> and disproved [[Optics (Ptolemy)|Ptolemy's theory of vision]]<ref name="smith2001">{{cite book|last= Smith |first= A. Mark |title=Alhacen's Theory of Visual Perception: A Critical Edition, with English Translation and Commentary, of the First Three Books of Alhacen's ''De Aspectibus'', the Medieval Latin Version of Ibn al-Haytham's ''Kitāb al-Manāẓir'', 2 vols |series=Transactions of the American Philosophical Society |volume=91 |issue=4–5 |year=2001 |isbn=978-0-87169-914-5 |publisher=[[American Philosophical Society]] |location=[[Philadelphia]] |oclc=47168716 |title-link= De Aspectibus }}</ref>{{rp|Book I, [6.54]. p. 372}} [[Avicenna]]'s compilation of the [[The Canon of Medicine|Canon of Medicine]], a medical encyclopedia, is considered to be one of the most important publications in medicine and was used until the 18th century.<ref>{{Cite book|title= Encyclopaedia of the History of Science, Technology, and Medicine in Non-Western Cultures|url= https://archive.org/details/encyclopaediahis00seli|url-access= limited|year= 2006|pages= [https://archive.org/details/encyclopaediahis00seli/page/n168 155]–156|publisher= Springer|bibcode= 2008ehst.book.....S|isbn= 978-1-4020-4559-2|editor-last1= Selin|editor-first1= Helaine |editor-link=Helaine Selin}}</ref>

By the eleventh century, most of Europe had become Christian,<ref name=Lindberg2007a/>{{rp|p=204}} and in 1088, the [[University of Bologna]] emerged as the first university in Europe.<ref>{{Cite journal |last=Russell |first=Josiah C. |year=1959 |title=Gratian, Irnerius, and the Early Schools of Bologna |url=https://www.jstor.org/stable/26473232 |journal=[[The Mississippi Quarterly]] |volume=12 |issue=4 |pages=168–188 |jstor=26473232 |url-access=registration |quote=Perhaps even as early as 1088 (the date officially set for the founding of the University) |via=[[JSTOR]] |access-date=May 27, 2022 |archive-date=May 27, 2022 |archive-url=https://web.archive.org/web/20220527132652/https://www.jstor.org/stable/26473232 |url-status=live }}</ref> As such, demand for Latin translation of ancient and scientific texts grew,<ref name=Lindberg2007a/>{{rp|p=204}} a major contributor to the [[Renaissance of the 12th century]]. Renaissance [[scholasticism]] in western Europe flourished, with experiments done by observing, describing, and classifying subjects in nature.<ref name=":0">{{cite web |url= https://www.britannica.com/biography/Saint-Albertus-Magnus |title= St. Albertus Magnus {{pipe}} German theologian, scientist, and philosopher |access-date= October 27, 2017 |url-status=live |archive-url= https://web.archive.org/web/20171028045424/https://www.britannica.com/biography/Saint-Albertus-Magnus |archive-date= October 28, 2017 }}</ref> In the 13th century, medical teachers and students at Bologna began opening human bodies, leading to the first anatomy textbook based on human dissection by [[Mondino de Luzzi]].<ref>{{cite book |last=Numbers |first=Ronald |url=http://www.hup.harvard.edu/catalog.php?isbn=9780674057418 |title=Galileo Goes to Jail and Other Myths about Science and Religion |publisher=Harvard University Press |year=2009 |isbn=978-0-674-03327-6 |page=45 |access-date=March 27, 2018 |archive-url=https://web.archive.org/web/20210120190509/https://www.hup.harvard.edu/catalog.php?isbn=9780674057418 |archive-date=January 20, 2021 |url-status=live}}</ref>

=== Renaissance ===
{{Main|Scientific Revolution|Science in the Renaissance}}
[[File:De Revolutionibus manuscript p9b.jpg|left|thumb|Drawing of the heliocentric model as proposed by the Copernicus's ''[[De revolutionibus orbium coelestium]]''|alt=Drawing of planets' orbit around the Sun]]
New developments in optics played a role in the inception of the [[Renaissance]], both by challenging long-held [[Metaphysics|metaphysical]] ideas on perception, as well as by contributing to the improvement and development of technology such as the [[camera obscura]] and the [[telescope]]. At the start of the Renaissance, [[Roger Bacon]], [[Vitello]], and [[John Peckham]] each built up a scholastic [[ontology]] upon a causal chain beginning with sensation, perception, and finally [[apperception]] of the individual and universal [[theory of forms|forms]] of Aristotle.<ref name="smith2001" />{{rp|Book I}} A model of vision later known as [[perspectivism]] was [[One-point perspective|exploited and studied]] by the artists of the Renaissance. This theory uses only three of Aristotle's four causes: formal, material, and final.<ref name="Smith1981">{{Cite journal |jstor = 231249 |doi = 10.1086/352843 |pmid = 7040292 |title = Getting the Big Picture in Perspectivist Optics|journal = Isis|volume = 72|issue = 4|pages = 568–89|last1 = Smith|first1 = A. Mark|year = 1981|s2cid = 27806323 }}</ref>

In the sixteenth century, [[Nicolaus Copernicus]] formulated a [[Heliocentrism|heliocentric model]] of the Solar System, stating that the planets revolve around the Sun, instead of the [[geocentric model]] where the planets and the Sun revolve around the Earth. This was based on a theorem that the [[orbital period]]s of the planets are longer as their orbs are farther from the center of motion, which he found not to agree with Ptolemy's model.<ref>{{Cite journal|doi = 10.1177/002182860203300301|title = Copernicus and the Origin of his Heliocentric System|journal = Journal for the History of Astronomy|volume = 33|issue = 3|pages = 219–35|year = 2016|last1 = Goldstein|first1 = Bernard R|s2cid = 118351058|url = http://pdfs.semanticscholar.org/e610/194b7b608cab49e034a542017213d827fb70.pdf|access-date = April 12, 2020|archive-date = April 12, 2020|archive-url = https://web.archive.org/web/20200412211013/http://pdfs.semanticscholar.org/e610/194b7b608cab49e034a542017213d827fb70.pdf|url-status = dead }}</ref><!-- Censorship and such from the church -->

[[Johannes Kepler]] and others challenged the notion that the only function of the eye is perception, and shifted the main focus in optics from the eye to the propagation of light.<ref name="Smith1981" /><ref name= Cohen2010d>{{cite book|last1= Cohen|first1= H. Floris|author-link= Floris Cohen|chapter = Greek nature knowledge transplanted and more: Renaissance Europe|title= How modern science came into the world. Four civilizations, one 17th-century breakthrough|date= 2010|pages=99–156|publisher= Amsterdam University Press|location= Amsterdam|isbn= 978-90-8964-239-4|edition= 2nd}}</ref> Kepler is best known, however, for improving Copernicus' heliocentric model through the discovery of [[Kepler's laws of planetary motion]]. Kepler did not reject Aristotelian metaphysics and described his work as a search for the [[Musica universalis|Harmony of the Spheres]].<ref name="Koestler">{{Cite book |last=Koestler |first=Arthur |url=https://archive.org/details/sleepwalkershist00koes_0/page/1 |title=The Sleepwalkers: A History of Man's Changing Vision of the Universe |publisher=[[Penguin Books]] |year=1990 |isbn=0-14-019246-8 |location=London |page=[https://archive.org/details/sleepwalkershist00koes_0/page/1 1] |author-link=Arthur Koestler |orig-date=1959}}</ref> [[Galileo]] had made significant contributions to astronomy, physics and engineering. However, he became persecuted after Pope Urban VIII sentenced him for writing about the heliocentric model.<ref name="Pope Urban VIII">{{cite web|url= http://galileo.rice.edu/gal/urban.html|title= Pope Urban VIII|last= van Helden|first= Al|year= 1995|website= The Galileo Project|access-date= November 3, 2016|url-status=live|archive-url= https://web.archive.org/web/20161111033150/http://galileo.rice.edu/gal/urban.html|archive-date= November 11, 2016}}</ref>

The [[printing press]] was widely used to publish scholarly arguments, including some that disagreed widely with contemporary ideas of nature.<ref>{{cite journal|last=Gingerich|first=Owen|title=Copernicus and the Impact of Printing|journal=Vistas in Astronomy|volume=17|year=1975|issue=1 |pages=201–218|doi=10.1016/0083-6656(75)90061-6 |bibcode=1975VA.....17..201G }}</ref> [[Francis Bacon]] and [[René Descartes]] published philosophical arguments in favor of a new type of non-Aristotelian science. Bacon emphasized the importance of experiment over contemplation, questioned the Aristotelian concepts of formal and final cause, promoted the idea that science should study the [[Physical law|laws of nature]] and the improvement of all human life.<ref>{{Cite book |last=Zagorin |first=Perez |title=Francis Bacon |page=84 |year=1998 |place=Princeton |publisher=Princeton University Press |isbn=978-0-691-00966-7}}</ref> Descartes emphasized individual thought and argued that mathematics rather than geometry should be used to study nature.<ref>{{cite book|last1=Davis|first1=Philip J.|last2=Hersh|first2=Reuben|year=1986|title=Descartes' Dream: The World According to Mathematics|location=Cambridge, MA|publisher=[[Harcourt Brace Jovanovich]]}}</ref><!-- This updated approach to studies in nature was seen as [[mechanistic]]. discuss -->

=== Age of Enlightenment ===
{{Main|Science in the Age of Enlightenment}}
[[File:Prinicipia-title.png|thumb|Title page of the 1687 first edition of ''[[Philosophiæ Naturalis Principia Mathematica]]'' by Isaac Newton|alt=see caption]]
At the start of the [[Age of Enlightenment]], [[Isaac Newton]] formed the foundation of [[classical mechanics]] by his ''[[Philosophiæ Naturalis Principia Mathematica]]'', greatly influencing future physicists.<ref>{{cite book|last=Gribbin|first=John|title=Science: A History 1543–2001|year=2002|page=241|publisher=Allen Lane |isbn=978-0-7139-9503-9|quote=Although it was just one of the many factors in the Enlightenment, the success of Newtonian physics in providing a mathematical description of an ordered world clearly played a big part in the flowering of this movement in the eighteenth century}}</ref> [[Gottfried Wilhelm Leibniz]] incorporated terms from [[Aristotelian physics]], now used in a new non-[[Teleology|teleological]] way. This implied a shift in the view of objects: objects were now considered as having no innate goals. Leibniz assumed that different types of things all work according to the same general laws of nature, with no special formal or final causes.<ref>{{Cite web|url=https://mathshistory.st-andrews.ac.uk/Biographies/Leibniz/|title=Gottfried Leibniz – Biography|website=Maths History|access-date=March 2, 2021|archive-date=July 11, 2017|archive-url=https://web.archive.org/web/20170711221621/http://www-groups.dcs.st-and.ac.uk/~history/Biographies/Leibniz.html|url-status=live}}</ref>

During this time, the declared purpose and value of science became producing wealth and [[invention]]s that would improve human lives, in the [[Economic materialism|materialistic]] sense of having more food, clothing, and other things. In [[Novum Organum|Bacon's words]], "the real and legitimate goal of sciences {{em|is the endowment of human life with new inventions and riches}}", and he discouraged scientists from pursuing intangible philosophical or spiritual ideas, which he believed contributed little to human happiness beyond "the fume of subtle, sublime or pleasing [speculation]".<ref>{{Cite book|url= https://books.google.com/books?id=PgmbZIybuRoC&pg=PA162|title= The Social and Economic Roots of the Scientific Revolution: Texts by Boris Hessen and Henryk Grossmann|last1= Freudenthal|first1= Gideon|last2= McLaughlin|first2= Peter|date= May 20, 2009|publisher= Springer Science & Business Media|isbn= 978-1-4020-9604-4|access-date= July 25, 2018|archive-date= January 19, 2020|archive-url= https://web.archive.org/web/20200119203949/https://books.google.com/books?id=PgmbZIybuRoC&pg=PA162|url-status= live}}</ref>

Science during the Enlightenment was dominated by [[scientific society|scientific societies]]<ref>{{Cite book |editor-last1=Goddard Bergin |editor-first1=Thomas |editor1-link=Thomas G. Bergin |url=https://archive.org/details/encyclopediaofre0000unse_d0p5 |title=Encyclopedia of the Renaissance |editor-last2=Speake |editor-first2=Jennifer |editor2-link=Jennifer Speake |year=1987 |publisher=Facts on File |isbn=978-0816013159 |publication-date=December 1, 1987}}</ref> and [[Academy|academies]], which had largely replaced universities as centers of scientific research and development. Societies and academies were the backbones of the maturation of the scientific profession. Another important development was the [[popular culture|popularization]] of science among an increasingly literate population.<ref>{{Cite book |last=van Horn Melton |first=James |url=https://www.cambridge.org/core/books/rise-of-the-public-in-enlightenment-europe/BA532085A260114CD430D9A059BD96EF |title=The Rise of the Public in Enlightenment Europe |publisher=[[Cambridge University Press]] |year=2001 |isbn=978-0511819421 |doi=10.1017/CBO9780511819421 |access-date=May 27, 2022 |url-access=subscription |archive-date=January 20, 2022 |archive-url=https://web.archive.org/web/20220120143805/https://www.cambridge.org/core/books/rise-of-the-public-in-enlightenment-europe/BA532085A260114CD430D9A059BD96EF |url-status=live|pages=82–83}}</ref> Enlightenment philosophers turned to a few of their scientific predecessors&nbsp;– [[Galileo Galilei|Galileo]], [[Johannes Kepler|Kepler]], [[Robert Boyle|Boyle]], and Newton principally&nbsp;– as the guides to every physical and social field of the day.<ref>{{Cite web |title=The Scientific Revolution and the Enlightenment (1500–1780)  |url=https://www.tamaqua.k12.pa.us/cms/lib07/PA01000119/Centricity/Domain/119/TheScientificRevolution.pdf |access-date=January 29, 2024}}</ref><ref>{{Cite web |title=Scientific Revolution {{!}} Definition, History, Scientists, Inventions, & Facts  |url=https://www.britannica.com/science/Scientific-Revolution |access-date=2024-01-29 |website=Britannica |language=en}}</ref>

The 18th century saw significant advancements in the practice of medicine<ref name="Brock">{{cite book |title=Brock Biology of Microorganisms |publisher=Prentice Hall |year=2006 |isbn=978-0131443297 |veditors=Madigan M, Martinko J |edition=11th}}</ref> and [[physics]];<ref>{{cite book |last=Guicciardini |first=N. |url=https://archive.org/details/readingprincipia0000guic |title=Reading the Principia: The Debate on Newton's Methods for Natural Philosophy from 1687 to 1736 |publisher=Cambridge University Press |year=1999 |isbn=978-0521640664 |location=New York |url-access=registration}}</ref> the development of biological [[Taxonomy (biology)|taxonomy]] by [[Carl Linnaeus]];<ref name="calisher">{{cite journal|author1-link=Charles Calisher  |last1=Calisher |first1=CH |year=2007 |title=Taxonomy: what's in a name? Doesn't a rose by any other name smell as sweet? |journal=Croatian Medical Journal |volume=48 |issue=2 |pages=268–270 |pmc=2080517 |pmid=17436393}}</ref> a new understanding of [[magnetism]] and electricity;<ref>{{cite book |last1=Darrigol |first1=Olivier |url=https://archive.org/details/electrodynamicsf0000darr |title=Electrodynamics from Ampère to Einstein |date=2000 |publisher=Oxford University Press |isbn=0198505949 |location=New York |url-access=registration}}</ref> and the maturation of [[chemistry]] as a discipline.<ref>{{cite book|last1=Olby|first1=R.C.|last2=Cantor|first2=G.N.|last3=Christie|first3=J.R.R.|last4=Hodge|first4=M.J.S.|year=1990|title=Companion to the History of Modern Science|location=London|publisher=Routledge|page=265}}</ref> Ideas on human nature, society, and economics evolved during the Enlightenment. Hume and other Scottish Enlightenment thinkers developed ''[[A Treatise of Human Nature]]'', which was expressed historically in works by authors including [[James Burnett, Lord Monboddo|James Burnett]], [[Adam Ferguson]], [[John Millar (philosopher)|John Millar]] and [[William Robertson (historian)|William Robertson]], all of whom merged a scientific study of how humans behaved in ancient and primitive cultures with a strong awareness of the determining forces of [[modernity]].<ref name="Magnusson">{{Cite web |last=Magnusson |first=Magnus |date=November 10, 2003 |title=Review of James Buchan, ''Capital of the Mind: how Edinburgh Changed the World'' |url=http://www.newstatesman.com/200311100040 |url-status=dead |archive-url=https://web.archive.org/web/20110606015918/http://www.newstatesman.com/200311100040 |archive-date=June 6, 2011 |access-date=April 27, 2014 |work=New Statesman}}</ref> Modern sociology largely originated from this movement.<ref>{{Cite journal |jstor = 588406|title = Origins of Sociology: The Case of the Scottish Enlightenment|journal = The British Journal of Sociology|volume = 21|issue = 2|pages = 164–180|last1 = Swingewood|first1 = Alan|year = 1970|doi = 10.2307/588406}}</ref> In 1776, [[Adam Smith]] published ''[[The Wealth of Nations]]'', which is often considered the first work on modern economics.<ref name="Fry">{{Cite book |last=Fry |first=Michael |url=https://archive.org/details/adamsmithslegacy0000unse |title=Adam Smith's Legacy: His Place in the Development of Modern Economics |publisher=[[Routledge]] |others=[[Paul Samuelson]], [[Lawrence Klein]], [[Franco Modigliani]], [[James M. Buchanan]], [[Maurice Allais]], [[Theodore Schultz]], [[Richard Stone]], [[James Tobin]], [[Wassily Leontief]], [[Jan Tinbergen]] |year=1992 |isbn=978-0-415-06164-3 |url-access=registration}}</ref>

=== 19th century ===
{{Main|19th century in science}}[[File:Darwin Tree 1837.png|left|thumb|The first diagram of an [[Phylogenetic tree|evolutionary tree]] made by [[Charles Darwin]] in 1837|alt=Sketch of a map with captions]]
During the nineteenth century, many distinguishing characteristics of contemporary modern science began to take shape. These included the transformation of the life and physical sciences, frequent use of precision instruments, emergence of terms such as "biologist", "physicist", "scientist", increased professionalization of those studying nature, scientists gained cultural authority over many dimensions of society, industrialization of numerous countries, thriving of popular science writings and emergence of science journals.<ref name="Lightman 19th">{{cite book|last1= Lightman|first1= Bernard|editor1-last= Shank|editor1-first= Michael|editor2-last= Numbers|editor2-first= Ronald|editor3-last= Harrison|editor3-first= Peter|title= Wrestling with Nature: From Omens to Science|date= 2011|publisher= University of Chicago Press|location= Chicago|isbn= 978-0-226-31783-0|page= 367|chapter= 13. Science and the Public}}</ref> During the late 19th century, [[psychology]] emerged as a separate discipline from philosophy when [[Wilhelm Wundt]] founded the first laboratory for psychological research in 1879.<ref name="leahey2018">{{cite book |last=Leahey |first=Thomas Hardy |title=A History of Psychology: From Antiquity to Modernity |date=2018 |publisher=Routledge |isbn=978-1-138-65242-2 |edition=8th |location=New York, NY |pages=219–253 |chapter=The psychology of consciousness}}</ref>

During the mid-19th century, [[Charles Darwin]] and [[Alfred Russel Wallace]] independently proposed the theory of evolution by [[natural selection]] in 1858, which explained how different plants and animals originated and evolved. Their theory was set out in detail in Darwin's book ''[[On the Origin of Species]]'', published in 1859.<ref name="padian2008">{{cite journal | last = Padian | first = Kevin | title = Darwin's enduring legacy | journal = Nature | volume = 451 | issue = 7179 | pages = 632–634 |year = 2008 | doi = 10.1038/451632a | pmid = 18256649 | bibcode = 2008Natur.451..632P | doi-access = free }}</ref> Separately, [[Gregor Mendel]] presented his paper, "[[Experiments on Plant Hybridization]]" in 1865,<ref>{{Cite book|last=Henig|first=Robin Marantz |author-link=Robin Marantz Henig |url=https://archive.org/details/monkingardenlost00heni|title=The monk in the garden: the lost and found genius of Gregor Mendel, the father of genetics|date=2000|pages=134–138}}</ref> which outlined the principles of biological inheritance, serving as the basis for modern genetics.<ref name="miko2008">{{cite journal | last = Miko | first = Ilona | title = Gregor Mendel's principles of inheritance form the cornerstone of modern genetics. So just what are they? | journal = Nature Education | volume = 1 | issue = 1 | pages = 134 |year = 2008 | url = https://www.nature.com/scitable/topicpage/gregor-mendel-and-the-principles-of-inheritance-593/ | access-date = May 9, 2021 | archive-date = July 19, 2019 | archive-url = https://web.archive.org/web/20190719224056/http://www.nature.com/scitable/topicpage/gregor-mendel-and-the-principles-of-inheritance-593 | url-status = live }}</ref>

Early in the 19th century, [[John Dalton]] suggested the modern [[atomic theory]], based on Democritus's original idea of indivisible particles called ''atoms''.<ref name="In Search of El Dorado: John Dalton">{{cite journal |last1=Rocke |first1=Alan J. |year=2005 |title=In Search of El Dorado: John Dalton and the Origins of the Atomic Theory |journal=Social Research |volume=72 |issue=1 |pages=125–158 |doi=10.1353/sor.2005.0003 |jstor=40972005|s2cid=141350239 }}</ref> The laws of [[conservation of energy]], [[conservation of momentum]] and [[conservation of mass]] suggested a highly stable universe where there could be little loss of resources. However, with the advent of the [[steam engine]] and the [[industrial revolution]] there was an increased understanding that not all forms of energy have the same [[energy quality|energy qualities]], the ease of conversion to useful [[Work (thermodynamics)|work]] or to another form of energy.<ref name=Reichl /> This realization led to the development of the laws of [[thermodynamics]], in which the free energy of the universe is seen as constantly declining: the [[entropy]] of a closed universe increases over time.{{efn|name= HelmholtzGibbsGuthLinde|1= Whether the universe is closed or open, or the [[shape of the universe]], is an open question. The 2nd law of thermodynamics,<ref name=Reichl >{{cite book |last=Reichl |first=Linda |author-link=Linda Reichl |date=1980 |title=A Modern Course in Statistical Physics |url= |location= |publisher=Edward Arnold |isbn=0-7131-2789-9}}</ref>{{rp|9}}<ref name=Rao>{{cite book|last=Rao|first=Y. V. C.|title=Chemical Engineering Thermodynamics|publisher=Universities Press|isbn=978-81-7371-048-3|year=1997|page=158}}</ref> and the 3rd law of thermodynamics<ref name=3rdlaw >{{cite journal |doi=10.1016/j.aop.2016.07.031 |title=Bounded energy exchange as an alternative to the third law of thermodynamics |year=2016 |last1=Heidrich |first1=M. |journal=Annals of Physics |volume=373 |pages=665–681 |bibcode=2016AnPhy.373..665H |url=https://zenodo.org/record/999547 |access-date=May 29, 2022 |archive-date=January 15, 2019 |archive-url=https://web.archive.org/web/20190115182230/https://zenodo.org/record/999547 |url-status=live }}</ref> imply the [[heat death of the universe]] if the universe is a closed system, but not necessarily for an expanding universe.}}

The [[electromagnetic theory]] was established in the 19th century by the works of [[Hans Christian Ørsted]], [[André-Marie Ampère]], [[Michael Faraday]], [[James Clerk Maxwell]], [[Oliver Heaviside]], and [[Heinrich Hertz]]. The new theory raised questions that could not easily be answered using Newton's framework. The discovery of [[X-ray]]s inspired the discovery of [[radioactivity]] by [[Henri Becquerel]] and [[Marie Curie]] in 1896,<ref>{{cite book |last=Mould |first=Richard F. |title=A century of X-rays and radioactivity in medicine: with emphasis on photographic records of the early years |date=1995 |publisher=Inst. of Physics Publ. |isbn=978-0-7503-0224-1 |edition=Reprint. with minor corr |location=Bristol |page=12}}</ref> Marie Curie then became the first person to win two [[Nobel Prize|Nobel prizes]].<ref name="psb113">{{cite book |last=Estreicher |first=Tadeusz |title=Polski słownik biograficzny, vol. 4 |title-link=Polski słownik biograficzny |year=1938 |page=113 |language=pl |chapter=Curie, Maria ze Skłodowskich |author-link=Tadeusz Estreicher}}</ref> In the next year came the discovery of the first subatomic particle, the [[electron]].<ref name="thomson">{{cite journal |last=Thomson |first=J.J. |year=1897 |title=Cathode Rays |url=https://zenodo.org/record/1431235 |url-status= |journal=[[Philosophical Magazine]] |volume=44 |issue=269 |pages=293–316 |doi=10.1080/14786449708621070 |archive-url= |archive-date= |access-date=February 24, 2022|url-access= }}</ref>

=== 20th century ===
{{Main|20th century in science}}
[[File:Carte trou ozone Antarctique.jpg|alt=Graph showing lower ozone concentration at the South Pole|thumb|A computer graph of the [[ozone hole]] made in 1987 using data from a space telescope]]
In the first half of the century, the development of [[antibiotics]] and [[artificial fertilizer]]s improved human [[standard of living|living standards]] globally.<ref>{{Cite journal |last=Goyotte |first=Dolores |year=2017 |title=The Surgical Legacy of World War II. Part II: The age of antibiotics |url=https://www.ast.org/ceonline/articles/402/files/assets/common/downloads/publication.pdf |url-status=live |journal=The Surgical Technologist |volume=109 |pages=257–264 |archive-url=https://web.archive.org/web/20210505180530/https://www.ast.org/ceonline/articles/402/files/assets/common/downloads/publication.pdf |archive-date=May 5, 2021 |access-date=January 8, 2021 }}</ref><ref>{{cite journal |last1=Erisman |first1=Jan Willem |author2=MA Sutton |author3=J Galloway |author4=Z Klimont |author5=W Winiwarter |date=October 2008 |title=How a century of ammonia synthesis changed the world |url=http://www.physics.ohio-state.edu/~wilkins/energy/Resources/Essays/ngeo325.pdf.xpdf |url-status=dead |journal=[[Nature Geoscience]] |volume=1 |issue=10 |pages=636–639 |bibcode=2008NatGe...1..636E |doi=10.1038/ngeo325 |s2cid=94880859 |archive-url=https://web.archive.org/web/20100723223052/http://www.physics.ohio-state.edu/~wilkins/energy/Resources/Essays/ngeo325.pdf.xpdf |archive-date=July 23, 2010 |access-date=October 22, 2010}}</ref> Harmful [[environmental issues]] such as [[ozone depletion]], [[ocean acidification]], [[eutrophication]] and [[climate change]] came to the public's attention and caused the onset of [[environmental studies]].<ref>{{cite journal|editor-last1=Emmett|editor-first1=Rob|editor-last2=Zelko|editor-first2=Frank|url=http://www.environmentandsociety.org/perspectives/2014/2/minding-gap-working-across-disciplines-environmental-studies|title=Minding the Gap: Working Across Disciplines in Environmental Studies|archive-url=https://web.archive.org/web/20220121054306/https://www.environmentandsociety.org/perspectives/2014/2/minding-gap-working-across-disciplines-environmental-studies |archive-date=January 21, 2022|series=RCC Perspectives no. 2|year=2014|doi=10.5282/rcc/6313|last1=Emmett |first1=Robert |last2=Zelko |first2=Frank |journal=Environment & Society Portal }}</ref>

During this period, scientific experimentation became increasingly [[Big science|larger in scale and funding]].<ref>{{Cite journal |last=Furner |first=Jonathan |date=June 1, 2003 |title=Little Book, Big Book: Before and After Little Science, Big Science: A Review Article, Part I |journal=Journal of Librarianship and Information Science |volume=35 |issue=2 |pages=115–125 |doi=10.1177/0961000603352006 |s2cid=34844169}}</ref> The extensive technological innovation stimulated by [[World War I]], [[World War II]], and the [[Cold War]] led to competitions between [[Great power|global powers]], such as the [[Space Race]]<ref>{{cite book |last=Kraft |first=Chris |url=https://archive.org/details/flight00chri |title=Flight: My Life in Mission Control |author2=James Schefter |publisher=Dutton |year=2001 |isbn=0-525-94571-7 |location=New York |author-link=Christopher C. Kraft, Jr.|pages=3–5}}</ref> and [[nuclear arms race]].<ref>{{cite book|last=Kahn|first=Herman|author-link=Herman Kahn|year=1962|title=Thinking about the Unthinkable|publisher=Horizon Press}}</ref> Substantial international collaborations were also made, despite armed conflicts.<ref>{{Cite book |last=Shrum |first=Wesley |url=https://www.worldcat.org/oclc/166143348 |title=Structures of scientific collaboration |date=2007 |publisher=MIT Press |others=Joel Genuth, Ivan Chompalov |isbn=978-0-262-28358-8 |location=Cambridge, Mass. |oclc=166143348 |access-date=May 31, 2022 |archive-date=July 30, 2022 |archive-url=https://web.archive.org/web/20220730034527/https://www.worldcat.org/title/structures-of-scientific-collaboration/oclc/166143348 |url-status=live }}</ref>

In the late 20th century, active recruitment of women and elimination of [[sex discrimination]] greatly increased the number of women scientists, but large gender disparities remained in some fields.<ref>{{cite book |last=Rosser |first=Sue V. |title=Breaking into the Lab: Engineering Progress for Women in Science |date=March 12, 2012 |publisher=New York University Press |isbn=978-0-8147-7645-2 |location=New York |page=7}}</ref> The discovery of the [[cosmic microwave background]] in 1964<ref>{{cite journal |last=Penzias |first=A. A. |year=2006 |title=The origin of elements |url=http://nobelprize.org/nobel_prizes/physics/laureates/1978/penzias-lecture.pdf |journal=Science |publisher=[[Nobel Foundation]] |volume=205 |issue=4406 |pages=549–54 |doi=10.1126/science.205.4406.549 |pmid=17729659 |access-date=October 4, 2006 |archive-date=January 17, 2011 |archive-url=https://web.archive.org/web/20110117225210/http://nobelprize.org/nobel_prizes/physics/laureates/1978/penzias-lecture.pdf |url-status=live }}</ref> led to a rejection of the [[Steady-state model|steady-state model of the universe]] in favor of the [[Big Bang]] theory of [[Georges Lemaître]].<ref>{{cite book |last=Weinberg |first=S. |url=https://archive.org/details/gravitationcosmo00stev_0/page/495 |title=Gravitation and Cosmology |publisher=John Whitney & Sons |year=1972 |isbn=978-0-471-92567-5 |pages=[https://archive.org/details/gravitationcosmo00stev_0/page/495 495–464] |url-access=registration}}</ref>

The century saw fundamental changes within science disciplines. Evolution became a unified theory in the early 20th-century when the [[Modern synthesis (20th century)|modern synthesis]] reconciled Darwinian evolution with [[classical genetics]].<ref name="Futuyma2017a">{{Cite book |last1=Futuyma |first1=Douglas J. |url=https://global.oup.com/ushe/product/evolution-9781605356051 |title=Evolution |last2=Kirkpatrick |first2=Mark |date= 2017 |isbn=978-1605356051 |edition=4th |pages=3–26 |chapter=Chapter 1: Evolutionary Biology |publisher=Sinauer |access-date=May 30, 2022 |archive-url=https://web.archive.org/web/20220531025652/https://global.oup.com/ushe/product/evolution-9781605356051?cc=us&lang=en& |archive-date=May 31, 2022 |url-status=live}}</ref> [[Albert Einstein]]'s [[theory of relativity]] and the development of [[quantum mechanics]] complement classical mechanics to describe physics in extreme [[length]], time and [[gravity]].<ref>{{Cite book |last=Miller |first=Arthur I. |title=Albert Einstein's special theory of relativity. Emergence (1905) and early interpretation (1905–1911) |date=1981 |location=Reading |publisher=Addison–Wesley |isbn=978-0-201-04679-3}}</ref><ref>{{cite book |last=ter Haar |first=D. |url=https://archive.org/details/oldquantumtheory0000haar |title=The Old Quantum Theory |publisher=Pergamon Press |year=1967 |isbn=978-0-08-012101-7 |pages=[https://archive.org/details/oldquantumtheory0000haar/page/206 206] |url-access=registration}}</ref> Widespread use of [[integrated circuit]]s in the last quarter of the 20th century combined with [[communications satellite]]s led to a revolution in information technology and the rise of the global internet and [[mobile computing]], including [[smartphone]]s. The need for mass systematization of long, intertwined causal chains and large amounts of data led to the rise of the fields of [[systems theory]] and computer-assisted [[scientific modelling|scientific modeling]].<ref>{{cite journal |last1=von Bertalanffy |first1=Ludwig |year=1972 |title=The History and Status of General Systems Theory |journal=The Academy of Management Journal |volume=15 |issue=4 |pages=407–26 |jstor=255139}}</ref>

=== 21st century ===
{{Main|21st century#Science and technology}}
[[File:Apjlab0e85f4 EHT-images-M87-four-teams.jpg|alt=|thumb|350x350px|Four predicted image of [[M87* black hole]] made by separate teams in the [[Event Horizon Telescope]] collaboration.]]
The [[Human Genome Project]] was completed in 2003 by identifying and mapping all of the genes of the [[human genome]].<ref>{{Cite journal|last1= Naidoo|first1= Nasheen|last2= Pawitan|first2= Yudi|last3= Soong|first3= Richie|last4= Cooper|first4= David N.|last5= Ku|first5= Chee-Seng|date= October 2011|title= Human genetics and genomics a decade after the release of the draft sequence of the human genome|journal= Human Genomics|volume= 5|issue= 6|pages= 577–622|doi= 10.1186/1479-7364-5-6-577|pmc= 3525251|pmid= 22155605|doi-access= free}}</ref> The first [[Induced pluripotent stem cell|induced pluripotent human stem cell]]s were made in 2006, allowing adult cells to be transformed into [[stem cell]]s and turn to any cell type found in the body.<ref>{{Cite journal|last1= Rashid|first1= S. Tamir|last2= Alexander|first2= Graeme J.M.|date= March 2013|title= Induced pluripotent stem cells: from Nobel Prizes to clinical applications|journal= Journal of Hepatology|volume= 58|issue= 3|pages= 625–629|doi=10.1016/j.jhep.2012.10.026|issn=1600-0641|pmid=23131523|doi-access= free}}</ref> With the affirmation of the [[Higgs boson]] discovery in 2013, the last particle predicted by the [[Standard Model]] of particle physics was found.<ref name="CERN March 2013">{{cite press release |last=O'Luanaigh |first=C. |date=March 14, 2013 |title=New results indicate that new particle is a Higgs boson |publisher=[[CERN]] |url=http://home.web.cern.ch/about/updates/2013/03/new-results-indicate-new-particle-higgs-boson |access-date=October 9, 2013 |url-status=live |archive-url=https://web.archive.org/web/20151020000722/http://home.web.cern.ch/about/updates/2013/03/new-results-indicate-new-particle-higgs-boson |archive-date=October 20, 2015}}</ref> In 2015, [[gravitational wave]]s, predicted by [[general relativity]] a century before, were [[First observation of gravitational waves|first observed]].<ref name="iop2017oct16">{{Cite journal |doi = 10.3847/2041-8213/aa91c9|title = Multi-messenger Observations of a Binary Neutron Star Merger|journal = The Astrophysical Journal|volume = 848|issue = 2|page = L12|year = 2017|last1 = Abbott|first1 = B.P.|last2 = Abbott|first2 = R.|last3 = Abbott|first3 = T.D.|last4 = Acernese|first4 = F.|last5 = Ackley|first5 = K.|last6 = Adams|first6 = C.|last7 = Adams|first7 = T.|last8 = Addesso|first8 = P.|last9 = Adhikari|first9 = R.X.|last10 = Adya|first10 = V.B.|last11 = Affeldt|first11 = C.|last12 = Afrough|first12 = M.|last13 = Agarwal|first13 = B.|last14 = Agathos|first14 = M.|last15 = Agatsuma|first15 = K.|last16 = Aggarwal|first16 = N.|last17 = Aguiar|first17 = O.D.|last18 = Aiello|first18 = L.|last19 = Ain|first19 = A.|last20 = Ajith|first20 = P.|last21 = Allen|first21 = B.|last22 = Allen|first22 = G.|last23 = Allocca|first23 = A.|last24 = Altin|first24 = P.A.|last25 = Amato|first25 = A.|last26 = Ananyeva|first26 = A.|last27 = Anderson|first27 = S.B.|last28 = Anderson|first28 = W.G.|last29 = Angelova|first29 = S.V.|last30 = Antier|first30 = S.|display-authors = 29|bibcode = 2017ApJ...848L..12A|arxiv = 1710.05833|s2cid = 217162243 | doi-access=free }}</ref><ref>{{cite journal |doi=10.1126/science.aar2149|title=Merging neutron stars generate gravitational waves and a celestial light show|journal=Science|year=2017|last1=Cho|first1=Adrian}}</ref> In 2019, the international collaboration [[Event Horizon Telescope]] presented the first direct image of a [[black hole]]'s [[accretion disk]].<ref>{{Cite web |date=April 20, 2019 |title=Media Advisory: First Results from the Event Horizon Telescope to be Presented on April 10th {{!}} Event Horizon Telescope |url=https://eventhorizontelescope.org/blog/media-advisory-first-results-event-horizon-telescope-be-presented-april-10th |archive-url=https://web.archive.org/web/20190420135254/https://eventhorizontelescope.org/blog/media-advisory-first-results-event-horizon-telescope-be-presented-april-10th |archive-date=April 20, 2019 |access-date=September 21, 2021}}</ref><!-- Should be one paragraph until ~2040, as it represents a quarter of the century -->

==Branches==
{{Main|Branches of science}}
Modern science is commonly divided into three major [[Branches of science|branch]]es: [[natural science]], [[social science]], and [[formal science]].<ref name="cohen2021"/> Each of these branches comprises various specialized yet overlapping scientific [[Academic discipline|disciplines]] that often possess their own [[nomenclature]] and expertise.<ref>{{cite web|url= http://seedmagazine.com/content/article/scientific_method_relationships_among_scientific_paradigms/|title= Scientific Method: Relationships Among Scientific Paradigms|date= March 7, 2007|work= Seed Magazine|access-date= November 4, 2016|url-status= dead|archive-url= https://web.archive.org/web/20161101001155/http://seedmagazine.com/content/article/scientific_method_relationships_among_scientific_paradigms/|archive-date= November 1, 2016}}</ref> Both natural and social sciences are [[empirical science]]s,<ref name="Bunge1998">{{cite book| title = Philosophy of Science: From Problem to Theory | last = Bunge | first = Mario Augusto | year = 1998 | publisher = Transaction Publishers | isbn = 978-0-7658-0413-6 | page = 24}}</ref> as their knowledge is based on [[Empirical evidence|empirical observations]] and is capable of being tested for its validity by other researchers working under the same conditions.<ref name="popper2002a">{{cite book | last=Popper | first=Karl R. | year=2002a | chapter = A survey of some fundamental problems | title=The Logic of Scientific Discovery | url=https://archive.org/details/logicscientificd00popp_574 | url-access=limited | orig-date=1959 | pages = [https://archive.org/details/logicscientificd00popp_574/page/n133 3]–26 | publisher=Routledge Classics | location=New York | isbn=978-0-415-27844-7 | oclc=59377149 }}</ref>

=== Natural science ===
[[Natural science]] is the study of the physical world. It can be divided into two main branches: [[list of life sciences|life science]] and [[Outline of physical science|physical science]]. These two branches may be further divided into more specialized disciplines. For example, physical science can be subdivided into [[physics]], [[chemistry]], [[astronomy]], and [[earth science]]. Modern natural science is the successor to the [[natural philosophy]] that began in [[Ancient Greece]]. [[Galileo Galilei|Galileo]], [[René Descartes|Descartes]], [[Francis Bacon|Bacon]], and [[Isaac Newton|Newton]] debated the benefits of using approaches which were more [[mathematical physics|mathematical]] and more experimental in a methodical way. Still, philosophical perspectives, [[conjecture]]s, and [[presupposition]]s, often overlooked, remain necessary in natural science.<ref name="Gauch2003">{{cite book | last = Gauch | first = Hugh G. Jr. | chapter = Science in perspective | title = Scientific Method in Practice | publisher = Cambridge University Press | location = Cambridge, United Kingdom | chapter-url = https://books.google.com/books?id=iVkugqNG9dAC&pg=PA71 | pages = 21–73 | isbn = 978-0-521-01708-4 | year = 2003 | access-date = September 3, 2018 | archive-date = December 25, 2020 | archive-url = https://web.archive.org/web/20201225200202/https://books.google.com/books?id=iVkugqNG9dAC&pg=PA71 | url-status = live }}</ref> Systematic data collection, including [[discovery science]], succeeded [[natural history]], which emerged in the 16th century by describing and classifying plants, animals, minerals, and so on.<ref name="Oglivie2008">{{cite book | last = Oglivie | first = Brian W. | year = 2008 | chapter = Introduction | title = The Science of Describing: Natural History in Renaissance Europe | pages = 1–24 | edition = Paperback | publisher = University of Chicago Press | location = Chicago | isbn = 978-0-226-62088-6}}</ref> Today, "natural history" suggests observational descriptions aimed at popular audiences.<ref name="Wordnet definition">{{cite web|title=Natural History|url=http://wordnetweb.princeton.edu/perl/webwn?s=natural+history|publisher=Princeton University WordNet|access-date=October 21, 2012|url-status=live|archive-url=https://web.archive.org/web/20120303173506/http://wordnetweb.princeton.edu/perl/webwn?s=natural+history|archive-date=March 3, 2012}}</ref>

=== Social science ===
[[File:Supply-demand-equilibrium.svg|thumb|[[Supply and demand]] curve in economics, crossing over at the optimal equilibrium|alt=Two curve crossing over at a point, forming a X shape]]
[[Social science]] is the study of human behavior and functioning of societies.<ref name="colanderhunt2019"/><ref name="nisbetgreenfeld2021"/> It has many disciplines that include, but are not limited to [[anthropology]], economics, history, [[human geography]], [[political science]], [[psychology]], and sociology.<ref name = colanderhunt2019 /> In the social sciences, there are many competing theoretical perspectives, many of which are extended through competing [[research program]]s such as the [[Structural functionalism|functionalists]], [[conflict theories|conflict theorists]], and [[interactionism|interactionists]] in sociology.<ref name = colanderhunt2019 /> Due to the limitations of conducting controlled experiments involving large groups of individuals or complex situations, social scientists may adopt other research methods such as the [[historical method]], [[case study|case studies]], and [[cross-cultural studies]]. Moreover, if quantitative information is available, social scientists may rely on statistical approaches to better understand social relationships and processes.<ref name = colanderhunt2019 />

=== Formal science ===
[[Formal science]] is an area of study that generates knowledge using [[formal system]]s.<ref name="wluniversity2021">{{cite web | url = https://my.wlu.edu/the-sciences-at-wandl/formal-sciences | title = Formal Sciences: Washington and Lee University | website = Washington and Lee University | access-date = May 14, 2021 | quote = A "formal science" is an area of study that uses formal systems to generate knowledge such as in Mathematics and Computer Science.  Formal sciences are important subjects because all of quantitative science depends on them. | archive-date = May 14, 2021 | archive-url = https://web.archive.org/web/20210514125428/https://my.wlu.edu/the-sciences-at-wandl/formal-sciences | url-status = live }}</ref><ref name="löwe2002"/><ref name="rucker2019"/> A formal system is an [[abstract structure]] used for inferring [[theorem]]s from [[axiom]]s according to a set of rules.<ref>{{Cite web |title=formal system |url=https://www.britannica.com/topic/formal-system |access-date=May 30, 2022 |website=[[Encyclopædia Britannica]] |language=en |archive-date=April 29, 2008 |archive-url=https://web.archive.org/web/20080429174130/http://www.britannica.com/eb/article-9034889/formal-system |url-status=live }}</ref> It includes mathematics,<ref>{{cite book |last=Tomalin |first=Marcus |year=2006 |title=Linguistics and the Formal Sciences }}</ref><ref>{{Cite journal|title=The Formal Sciences: Their Scope, Their Foundations, and Their Unity|journal=Synthese|volume=133 |pages=5–11| doi=10.1023/a:1020887832028|year=2002|last1=Löwe|first1=Benedikt|s2cid=9272212}}</ref> [[systems theory]], and [[theoretical computer science]]. The formal sciences share similarities with the other two branches by relying on objective, careful, and systematic study of an area of knowledge. They are, however, different from the empirical sciences as they rely exclusively on deductive reasoning, without the need for empirical evidence, to verify their abstract concepts.<ref name="Fetzer2013"/><ref name="Bill2007">{{cite book |first=Thompson | last = Bill |title=The Nature of Statistical Evidence |chapter=2.4 Formal Science and Applied Mathematics |publisher=Springer |series=Lecture Notes in Statistics |volume=189 |year=2007 |page=15}}</ref><ref name="popper2002a" /> The formal sciences are therefore [[A priori and a posteriori|''a priori'']] disciplines and because of this, there is disagreement on whether they constitute a science.<ref name="Bishop1991"/><ref name="Bunge 1998">{{cite book |last1=Bunge |first1=Mario |title=Philosophy of Science: Volume 1, From Problem to Theory |date=1998 |publisher=Routledge |isbn=978-0-7658-0413-6 |edition=revised |volume=1 |location=New York |pages=3–50 |chapter=The Scientific Approach}}</ref> Nevertheless, the formal sciences play an important role in the empirical sciences. [[Calculus]], for example, was initially invented to understand [[Motion (physics)|motion]] in physics.<ref name="MujumdarandTejinder2016">{{Cite book | last1 = Mujumdar | first1 = Anshu Gupta | last2 = Singh | first2 = Tejinder | year = 2016 | chapter = Cognitive science and the connection between physics and mathematics | title = Trick or Truth?: The Mysterious Connection Between Physics and Mathematics | editor-first1 = Anthony | editor-last1 = Aguirre | editor-first2 = Brendan | editor-last2 = Foster | edition =  | series = The Frontiers Collection | pages = 201–218 | location = Switzerland | publisher = SpringerNature | isbn = 978-3-319-27494-2}}</ref> Natural and social sciences that rely heavily on mathematical applications include [[mathematical physics]],<ref>{{cite web |title=About the Journal |url=http://jmp.aip.org/jmp/staff.jsp |url-status=dead |archive-url=https://web.archive.org/web/20061003233339/http://jmp.aip.org/jmp/staff.jsp |archive-date=October 3, 2006 |access-date=October 3, 2006 |website=[[Journal of Mathematical Physics]]}}</ref> [[mathematical chemistry|chemistry]],<ref>{{cite book|last=Restrepo|first=G.|chapter=Mathematical chemistry, a new discipline|title=Essays in the philosophy of chemistry|editor-last1=Scerri|editor-first1=E.|editor-last2=Fisher|editor-first2=G.|publisher=Oxford University Press|location=New York, UK|year=2016|pages=332–351|isbn=978-0-19-049459-9 |url=https://global.oup.com/academic/product/essays-in-the-philosophy-of-chemistry-9780190494599?cc=de&lang=en&|archive-url=https://web.archive.org/web/20210610130352/https://global.oup.com/academic/product/essays-in-the-philosophy-of-chemistry-9780190494599?cc=de&lang=en& |archive-date=June 10, 2021 }}</ref> [[mathematical biology|biology]],<ref>{{Cite web |title=What is mathematical biology|publisher=Centre for Mathematical Biology, University of Bath|url=http://www.bath.ac.uk/cmb/mathBiology/ |url-status=dead |archive-url=https://web.archive.org/web/20180923070442/http://www.bath.ac.uk/cmb/mathBiology/ |archive-date=September 23, 2018 |access-date=June 7, 2018}}</ref> [[mathematical finance|finance]],<ref>{{cite web |last=Johnson |first=Tim |date=September 1, 2009 |title=What is financial mathematics? |url=https://plus.maths.org/content/what-financial-mathematics |access-date=March 1, 2021 |work=+Plus Magazine |archive-date=April 8, 2022 |archive-url=https://web.archive.org/web/20220408231344/https://plus.maths.org/content/what-financial-mathematics |url-status=live }}</ref> and [[mathematical economics|economics]].<ref>{{cite book|last=Varian|first=Hal|author-link=Hal Varian|year=1997|chapter=What Use Is Economic Theory?|editor-last1=D'Autume|editor-first1=A.|editor-last2=Cartelier|editor-first2=J.|title=Is Economics Becoming a Hard Science?|publisher=Edward Elgar}} [http://www.sims.berkeley.edu/~hal/Papers/theory.pdf Pre-publication]. {{Webarchive|url=https://web.archive.org/web/20060625062619/http://www.sims.berkeley.edu/~hal/Papers/theory.pdf |date=June 25, 2006 }}. Retrieved April 1, 2008.</ref>

=== Applied science ===
[[Applied science]] is the use of the [[scientific method]] and knowledge to attain practical goals and includes a broad range of disciplines such as engineering and medicine.<ref name="abraham2004">{{Cite journal |last=Abraham |first=Reem Rachel |year=2004 |title=Clinically oriented physiology teaching: strategy for developing critical-thinking skills in undergraduate medical students |journal=Advances in Physiology Education |volume=28 |issue=3 |pages=102–04 |doi=10.1152/advan.00001.2004 |pmid=15319191 |s2cid=21610124}}</ref><ref name="mbunge1966" /> Engineering is the use of scientific principles to invent, design and build machines, structures and technologies.<ref name="cambridgedictionary">{{cite web | url = https://dictionary.cambridge.org/dictionary/english/engineering | title = Cambridge Dictionary | publisher = Cambridge University Press | access-date = March 25, 2021 | archive-date = August 19, 2019 | archive-url = https://web.archive.org/web/20190819030859/https://dictionary.cambridge.org/dictionary/english/engineering | url-status = live }}</ref> Science may contribute to the development of new technologies.<ref>{{Cite journal |last=Brooks |first=Harvey |date=1994-09-01 |title=The relationship between science and technology |url=https://www.belfercenter.org/sites/default/files/files/publication/sciencetechnology.pdf |journal=Research Policy |series=Special Issue in Honor of Nathan Rosenberg |language=en |volume=23 |issue=5 |pages=477–486 |doi=10.1016/0048-7333(94)01001-3 |issn=0048-7333}}</ref> Medicine is the practice of caring for patients by maintaining and restoring health through the [[prevention (medical)|prevention]], [[Medical diagnosis|diagnosis]], and [[therapy|treatment]] of injury or disease.<ref>{{cite book |last=Firth |first=John |title=Oxford textbook of medicine |publisher=Oxford University Press |year=2020 |isbn=978-0-19-874669-0 |location=Oxford |chapter=Science in medicine: when, how, and what}}</ref><ref>{{cite journal |last=Saunders |first=J. |date=June 2000 |title=The practice of clinical medicine as an art and as a science |journal=Med Humanit |volume=26 |issue=1 |pages=18–22 |doi=10.1136/mh.26.1.18 |pmid=12484313 |doi-access=free |s2cid=73306806|pmc=1071282 }}</ref> The applied sciences are often contrasted with the [[basic science]]s, which are focused on advancing scientific theories and laws that explain and predict events in the natural world.<ref name="Davis">{{cite journal |last1=Davis |first1=Bernard D. |date=March 2000 |title=Limited scope of science |journal=Microbiology and Molecular Biology Reviews |volume=64 |issue=1 |pages=1–12 |doi=10.1128/MMBR.64.1.1-12.2000 |pmc=98983 |pmid=10704471|postscript=none}} & "Technology" in {{cite journal |first=Bernard |last=Davis |author-link1=Bernard Davis (biologist) |date=Mar 2000 |title=The scientist's world |journal=[[Microbiology and Molecular Biology Reviews]] |volume=64 |issue=1 |pages=1–12 |doi=10.1128/MMBR.64.1.1-12.2000 |pmc=98983 |pmid=10704471}}</ref><ref name="McCormick">{{cite journal |first=James |last=McCormick |year=2001 |title=Scientific medicine—fact of fiction? The contribution of science to medicine |journal=Occasional Paper (Royal College of General Practitioners) |pages=3–6 |pmc=2560978 |pmid=19790950 |number=80}}</ref>

[[Computational science]] applies [[Computer simulation|computing power to simulate]] real-world situations, enabling a better understanding of scientific problems than formal mathematics alone can achieve. The use of [[machine learning]] and [[artificial intelligence]] is becoming a central feature of computational contributions to science for example in [[agent-based computational economics]], [[random forest]]s, [[topic model]]ing and various forms of prediction. However, machines alone rarely advance knowledge as they require human guidance and capacity to reason; and they can introduce bias against certain social groups or sometimes underperform against humans.<ref>{{cite journal |last1=Breznau |first1=Nate |year=2022 |title=Integrating Computer Prediction Methods in Social Science: A Comment on Hofman et al. (2021) |journal=Social Science Computer Review |volume=40 |issue=3 |pages=844–853 |doi=10.1177/08944393211049776 |doi-access=free |s2cid=248334446|url=https://osf.io/adxb3/download }}</ref><ref>{{Cite journal |last1=Hofman |first1=Jake M. |last2=Watts |first2=Duncan J. |author2-link=Duncan J. Watts |last3=Athey |first3=Susan |author3-link=Susan Athey |last4=Garip |first4=Filiz |last5=Griffiths |first5=Thomas L. |author5-link=Tom Griffiths (cognitive scientist) |last6=Kleinberg |first6=Jon |author6-link=Jon Kleinberg |last7=Margetts |first7=Helen |author7-link=Helen Margetts |last8=Mullainathan |first8=Sendhil |author8-link=Sendhil Mullainathan |last9=Salganik |first9=Matthew J. |author9-link=Matthew J. Salganik |last10=Vazire |first10=Simine |author10-link=Simine Vazire |last11=Vespignani |first11=Alessandro |author11-link=Alessandro Vespignani |date=July 2021 |title=Integrating explanation and prediction in computational social science |url=https://www.nature.com/articles/s41586-021-03659-0 |url-status=live |journal=Nature |language=en |volume=595 |issue=7866 |pages=181–188 |bibcode=2021Natur.595..181H |doi=10.1038/s41586-021-03659-0 |issn=1476-4687 |pmid=34194044 |archive-url=https://web.archive.org/web/20210925074416/https://www.nature.com/articles/s41586-021-03659-0 |archive-date=September 25, 2021 |access-date=September 25, 2021 |s2cid=235697917}}</ref>

=== Interdisciplinary science ===
[[Interdisciplinarity|Interdisciplinary science]] involves the combination of two or more disciplines into one,<ref>{{cite journal |last=Nissani |first=M. |year=1995 |title=Fruits, Salads, and Smoothies: A Working definition of Interdisciplinarity |journal=The Journal of Educational Thought |volume=29 |issue=2 |pages=121–128 |jstor=23767672}}</ref> such as [[bioinformatics]], a combination of biology and computer science<ref>{{cite book |url=https://archive.org/details/digitalcodeoflif0000mood |title=Digital Code of Life: How Bioinformatics is Revolutionizing Science, Medicine, and Business |vauthors=Moody G |year=2004 |isbn=978-0-471-32788-2 |url-access=registration|page=vii|publisher=John Wiley & Sons }}</ref> or [[cognitive science]]s. The concept has existed since the ancient Greek and it became popular again in the 20th century.<ref name="ausburg">{{cite book |last=Ausburg |first=Tanya |title=Becoming Interdisciplinary: An Introduction to Interdisciplinary Studies |publisher=Kendall/Hunt Publishing |year=2006 |edition=2nd |location=New York}}</ref>

== Scientific research ==
Scientific research can be labeled as either basic or applied research. [[Basic research]] is the search for knowledge and [[applied research]] is the search for solutions to practical problems using this knowledge. Most understanding comes from basic research, though sometimes applied research targets specific practical problems. This leads to technological advances that were not previously imaginable.<ref>{{cite web|url= http://richarddawkins.net/articles/91|archive-url= https://web.archive.org/web/20120119113522/http://richarddawkins.net/articles/91|archive-date= January 19, 2012 |title= To Live at All Is Miracle Enough|first= Richard |last= Dawkins |publisher= RichardDawkins.net |date= May 10, 2006 |access-date= February 5, 2012}}</ref>

=== Scientific method ===
[[File:The Scientific Method.svg|thumb|A diagram variant of scientific method represented as an [[Scientific method#Elements of the scientific method|ongoing process]]|alt=6 steps of the scientific method in a loop]]

Scientific research involves using the [[scientific method]], which seeks to [[objectivity (science)|objectively]] explain the events of [[nature]] in a [[reproducible]] way.<ref name= difrancia1976>{{cite book | last= di Francia | first= Giuliano Toraldo | chapter = The method of physics | title = The Investigation of the Physical World| location = Cambridge, United Kingdom | publisher = Cambridge University Press| year=1976 | pages = 1–52 | isbn=978-0-521-29925-1|quote=The amazing point is that for the first time since the discovery of mathematics, a method has been introduced, the results of which have an intersubjective value!}}</ref> Scientists usually take for granted a set of basic assumptions that are needed to justify the scientific method: there is an [[objective reality]] shared by all rational observers; this objective reality is governed by [[natural law]]s; these laws were discovered by means of systematic [[observation]] and experimentation.<ref name="Heilbron"/> Mathematics is essential in the formation of [[hypothesis|hypotheses]], [[Theory|theories]], and laws, because it is used extensively in quantitative modeling, observing, and collecting [[measurements]].<ref name="popper2002e">{{cite book |last=Popper |first=Karl R. |url=https://archive.org/details/logicscientificd00popp_574 |title=The Logic of Scientific Discovery |publisher=Routledge Classics |year=2002e |isbn=978-0-415-27844-7 |location=New York |pages=[https://archive.org/details/logicscientificd00popp_574/page/n133 3]–26 |chapter=The problem of the empirical basis |oclc=59377149 |orig-date=1959 |url-access=limited}}</ref> Statistics is used to summarize and analyze data, which allows scientists to assess the reliability of experimental results.<ref>{{Cite book |last1=Diggle |first1=Peter J. |author-link=Peter Diggle |title=Statistics and Scientific Method: An Introduction for Students and Researchers |last2=Chetwynd |first2=Amanda G. |author2-link=Amanda Chetwynd |year= 2011 |publisher=[[Oxford University Press]] |isbn=978-0199543182 |pages=1, 2}}</ref>

In the scientific method, an explanatory [[thought experiment]] or hypothesis is put forward as an explanation using [[Occam's razor|parsimony principles]] and is expected to seek [[consilience]]&nbsp;– fitting with other accepted facts related to an observation or scientific question.<ref name= EOWilson>{{cite book| last = Wilson | first = Edward | title = Consilience: The Unity of Knowledge | publisher = Vintage | location = New York | year = 1999 | isbn = 978-0-679-76867-8}}</ref> This tentative explanation is used to make [[falsifiable]] predictions, which are typically posted before being tested by experimentation. Disproof of a prediction is evidence of progress.<ref name = difrancia1976 />{{Rp|pages=4–5}}<ref name = fara2009>{{cite book | last= Fara | first= Patricia | author-link= Patricia Fara | year= 2009 | chapter= Decisions | title= Science: A Four Thousand Year History | location= Oxford, United Kingdom | publisher= Oxford University Press | isbn= 978-0-19-922689-4 | page= [https://archive.org/details/sciencefourthous00fara/page/408 408] | chapter-url= https://archive.org/details/sciencefourthous00fara/page/306}}</ref> Experimentation is especially important in science to help establish [[causality|causal relationships]] to avoid the [[correlation does not imply causation|correlation fallacy]], though in some sciences such as astronomy or geology, a predicted observation might be more appropriate.<ref name="Aldrich1995">{{Cite journal|last=Aldrich |first=John |journal=Statistical Science |volume=10 |year=1995 |pages=364–376 |title=Correlations Genuine and Spurious in Pearson and Yule |jstor=2246135 |doi=10.1214/ss/1177009870 |issue=4 |doi-access=free }}</ref>

When a hypothesis proves unsatisfactory, it is modified or discarded.<ref name = Nola2005k>{{cite book| last1= Nola | first1= Robert | last2= Irzik | first2= Gürol | year= 2005k | chapter = naive inductivism as a methodology in science | title= Philosophy, science, education and culture | volume= 28 | series=Science & technology education library | isbn= 978-1-4020-3769-6 | publisher= Springer | pages = 207–230 }}</ref> If the hypothesis survived testing, it may become adopted into the framework of a [[scientific theory]], a [[deductive logic|valid]]ly [[reason]]ed, self-consistent model or framework for describing the behavior of certain natural events. A theory typically describes the behavior of much broader sets of observations than a hypothesis; commonly, a large number of hypotheses can be logically bound together by a single theory. Thus a theory is a hypothesis explaining various other hypotheses. In that vein, theories are formulated according to most of the same scientific principles as hypotheses. Scientists may generate a [[Scientific modelling|model]], an attempt to describe or depict an observation in terms of a logical, physical or mathematical representation and to generate new hypotheses that can be tested by experimentation.<ref name = Nola2005j>{{cite book| last1= Nola | first1= Robert | last2= Irzik | first2= Gürol | year=2005j | chapter = The aims of science and critical inquiry | title= Philosophy, science, education and culture | volume= 28 | series= Science & technology education library | isbn= 978-1-4020-3769-6 | publisher= Springer | pages = 207–230 }}</ref>

While performing experiments to test hypotheses, scientists may have a preference for one outcome over another.<ref>{{cite web| last= van Gelder | first= Tim | year= 1999 | url= http://www.philosophy.unimelb.edu.au/tgelder/papers/HeadsIWin.pdf | title="Heads I win, tails you lose": A Foray Into the Psychology of Philosophy | publisher= University of Melbourne | access-date= March 28, 2008 |archive-url = https://web.archive.org/web/20080409054240/http://www.philosophy.unimelb.edu.au/tgelder/papers/HeadsIWin.pdf <!-- Bot retrieved archive --> |archive-date = April 9, 2008}}</ref><ref>{{cite web | last= Pease | first= Craig | date= September 6, 2006 | archive-url= https://web.archive.org/web/20100619154617/http://law-and-science.net/Science4BLJ/Scientific_Method/Deliberate.bias/Text.htm | archive-date = June 19, 2010 | title= Chapter 23. Deliberate bias: Conflict creates bad science | website= Science for Business, Law and Journalism | publisher=Vermont Law School| url= http://law-and-science.net/Science4BLJ/Scientific_Method/Deliberate.bias/Text.htm}}</ref> Eliminating the bias can be achieved by transparency, careful [[Design of experiments|experimental design]], and a thorough [[peer review]] process of the experimental results and conclusions.<ref>{{cite book | first= David | last= Shatz | year = 2004 | title= Peer Review: A Critical Inquiry | publisher= Rowman & Littlefield | isbn= 978-0-7425-1434-8 | oclc= 54989960}}</ref><ref>{{cite book | first= Sheldon | last= Krimsky | year= 2003 | title= Science in the Private Interest: Has the Lure of Profits Corrupted the Virtue of Biomedical Research | publisher= Rowman & Littlefield | isbn= 978-0-7425-1479-9 | oclc= 185926306 | url= https://archive.org/details/scienceinprivate0000krim }}</ref> After the results of an experiment are announced or published, it is normal practice for independent researchers to double-check how the research was performed, and to follow up by performing similar experiments to determine how dependable the results might be.<ref>{{cite book | first= Ruth Ellen | last= Bulger | year= 2002 |author2= Heitman, Elizabeth |author3= Reiser, Stanley Joel | title= The Ethical Dimensions of the Biological and Health Sciences | edition= 2nd | isbn= 978-0-521-00886-0 | publisher= Cambridge University Press | oclc= 47791316 }}</ref> Taken in its entirety, the scientific method allows for highly creative problem solving while minimizing the effects of subjective and [[confirmation bias]].<ref name= backer>{{cite web|last= Backer |first= Patricia Ryaby |date= October 29, 2004 |url= http://www.engr.sjsu.edu/pabacker/scientific_method.htm |title= What is the scientific method? |publisher= San Jose State University |access-date=March 28, 2008 |url-status=dead |archive-url= https://web.archive.org/web/20080408082917/http://www.engr.sjsu.edu/pabacker/scientific_method.htm |archive-date= April 8, 2008 }}</ref> [[Intersubjective verifiability]], the ability to reach a consensus and reproduce results, is fundamental to the creation of all scientific knowledge.<ref name="ziman1978c">{{cite book |last=Ziman |first=John |title=Reliable knowledge: An exploration of the grounds for belief in science |publisher=Cambridge University Press |year=1978c |isbn=978-0-521-22087-3 |location=Cambridge |pages=[https://archive.org/details/reliableknowledg00john/page/42 42–76] |chapter=Common observation |chapter-url=https://archive.org/details/reliableknowledg00john/page/42}}</ref>

=== Scientific literature ===
{{Main|Scientific literature|Lists of important publications in science}}
[[File:Nature_cover,_November_4,_1869.jpg|thumb|Cover of the first issue of ''[[Nature (journal)|Nature]]'', November 4, 1869|alt=Decorated "NATURE" as title, with scientific text below|left]]
Scientific research is published in a range of literature.<ref>{{cite journal |author-link= John Ziman| last= Ziman | first= J.M. | journal= Science | title= The proliferation of scientific literature: a natural process | year=1980 | volume=208 | issue=4442 | pages=369–71 | doi= 10.1126/science.7367863 | pmid=7367863| bibcode=1980Sci...208..369Z }}</ref> [[Scientific journal]]s communicate and document the results of research carried out in universities and various other research institutions, serving as an archival record of science. The first scientific journals, ''[[Journal des sçavans]]'' followed by ''[[Philosophical Transactions of the Royal Society|Philosophical Transactions]]'', began publication in 1665. Since that time the total number of active periodicals has steadily increased. In 1981, one estimate for the number of scientific and technical journals in publication was 11,500.<ref>{{cite book | first=Krishna | last=Subramanyam |author2=Subramanyam, Bhadriraju | year=1981 | title=Scientific and Technical Information Resources | publisher=CRC Press | isbn=978-0-8247-8297-9 | oclc=232950234 }}</ref>

Most scientific journals cover a single scientific field and publish the research within that field; the research is normally expressed in the form of a [[scientific paper]]. Science has become so pervasive in modern societies that it is considered necessary to communicate the achievements, news, and ambitions of scientists to a wider population.<ref name="bush1945">{{cite web |last=Bush |first=Vannevar |date=July 1945 |title=Science the Endless Frontier |url=https://www.nsf.gov/od/lpa/nsf50/vbush1945.htm |url-status=live |archive-url=https://web.archive.org/web/20161107221306/https://www.nsf.gov/od/lpa/nsf50/vbush1945.htm |archive-date=November 7, 2016 |access-date=November 4, 2016 |publisher=National Science Foundation}}</ref>

=== Challenges ===
The [[replication crisis]] is an ongoing [[methodological]] crisis that affects parts of the [[social science|social]] and [[life science]]s. In subsequent investigations, the results of many scientific studies are proven to be [[reproducibility|unrepeatable]].<ref>{{Cite journal | doi = 10.1038/515009a| title = Metascience could rescue the 'replication crisis'| journal = Nature| volume = 515| issue = 7525| pages = 9| year = 2014| last1 = Schooler | first1 = J. W.| pmid=25373639| bibcode = 2014Natur.515....9S| doi-access = free}}</ref> The crisis has long-standing roots; the phrase was coined in the early 2010s<ref>{{Cite journal| doi = 10.1177/1745691612465253| title = Editors' Introduction to the Special Section on Replicability in Psychological Science: A Crisis of Confidence?| journal = Perspectives on Psychological Science| volume = 7| issue = 6| pages = 528–530| year = 2012| last1 = Pashler| first1 = Harold| last2 = Wagenmakers| first2 = Eric Jan| pmid = 26168108| s2cid = 26361121| doi-access=free }}</ref> as part of a growing awareness of the problem. The replication crisis represents an important body of research in [[metascience]], which aims to improve the quality of all scientific research while reducing waste.<ref>{{Cite journal|last1= Ioannidis|first1= John P. A.|last2=Fanelli|first2= Daniele|last3= Dunne|first3= Debbie Drake|last4= Goodman|first4= Steven N.|date= October 2, 2015|title= Meta-research: Evaluation and Improvement of Research Methods and Practices|journal=PLOS Biology|volume= 13|issue= 10|pages=–1002264|doi= 10.1371/journal.pbio.1002264|pmid= 26431313|pmc= 4592065|issn= 1545-7885|doi-access= free}}</ref>

An area of study or speculation that masquerades as science in an attempt to claim a legitimacy that it would not otherwise be able to achieve is sometimes referred to as [[pseudoscience]], [[fringe science]], or [[junk science]].<ref>{{cite web|url=https://plato.stanford.edu/archives/fall2021/entries/pseudo-science|title=Science and Pseudoscience|at=Section 2: The "science" of pseudoscience|website=[[Stanford Encyclopedia of Philosophy]]|first1=Sven Ove|last1=Hansson|last2=Zalta|first2=Edward N.|date=September 3, 2008 |access-date=May 28, 2022|archive-date=October 29, 2021|archive-url=https://web.archive.org/web/20211029205141/https://plato.stanford.edu/archives/fall2021/entries/pseudo-science/|url-status=live}}</ref><ref>{{cite book|last=Shermer|first=Michael|name-list-style=vanc|author-link=Michael Shermer|year=1997|title=Why people believe weird things: pseudoscience, superstition, and other confusions of our time|url=https://archive.org/details/isbn_9780965594875|url-access=registration|location=New York|publisher=W. H. Freeman and Company|isbn=978-0-7167-3090-3|page=17}}</ref> Physicist [[Richard Feynman]] coined the term "[[cargo cult science]]" for cases in which researchers believe and at a glance looks like they are doing science, but lack the honesty allowing their results to be rigorously evaluated.<ref>{{cite web|url= http://neurotheory.columbia.edu/~ken/cargo_cult.html |title= Cargo Cult Science |last= Feynman |first= Richard |year= 1974 |website= Center for Theoretical Neuroscience |publisher= Columbia University |archive-url= https://web.archive.org/web/20050304032544/http://neurotheory.columbia.edu/~ken/cargo_cult.html |archive-date=March 4, 2005 |url-status=dead |access-date=November 4, 2016 }}</ref> Various types of commercial advertising, ranging from hype to fraud, may fall into these categories. Science has been described as "the most important tool" for separating valid claims from invalid ones.<ref>{{Cite book |last=Novella |first=Steven |title=The Skeptics' Guide to the Universe: How to Know What's Really Real in a World Increasingly Full of Fake |title-link=The Skeptics' Guide to the Universe (book) |publisher=Hodder & Stoughton |year=2018 |isbn=978-1473696419 |page=162 |language=en |author-link=Steven Novella}}</ref>

There can also be an element of political or ideological bias on all sides of scientific debates. Sometimes, research may be characterized as "bad science," research that may be well-intended but is incorrect, obsolete, incomplete, or over-simplified expositions of scientific ideas. The term "[[scientific misconduct]]" refers to situations such as where researchers have intentionally misrepresented their published data or have purposely given credit for a discovery to the wrong person.<ref name= COPE1999PDF>{{cite journal |title= Coping with fraud |journal= The COPE Report 1999 |pages= 11–18 |url= http://www.publicationethics.org.uk/reports/1999/1999pdf3.pdf |archive-url= https://web.archive.org/web/20070928151119/http://www.publicationethics.org.uk/reports/1999/1999pdf3.pdf |quote= It is 10 years, to the month, since Stephen Lock&nbsp;... Reproduced with kind permission of the Editor, The Lancet. |archive-date=September 28, 2007 |access-date=July 21, 2011}}</ref>

== Philosophy of science ==
{{anchor|ConjectureAndRefutation}}[[File:Epicycle and deferent.svg|thumb|For [[Thomas Kuhn|Kuhn]], the addition of [[Deferent and epicycle|epicycles]] in Ptolemaic astronomy was "normal science" within a paradigm, whereas the [[The Structure of Scientific Revolutions#Copernican Revolution|Copernican Revolution]] was a paradigm shift|alt=Depiction of epicycles, where a planet orbit is going around in a bigger orbit]]

There are different schools of thought in the [[philosophy of science]]. The most popular position is [[empiricism]], which holds that knowledge is created by a process involving observation; scientific theories generalize observations.<ref name="Godfrey-Smith2003c">{{cite book |last=Godfrey-Smith |first=Peter |url=https://archive.org/details/theoryrealityint00godf |title=Theory and Reality: An Introduction to the Philosophy of Science |publisher=University of Chicago |year=2003c |isbn=978-0-226-30062-7 |location=Chicago |pages=[https://archive.org/details/theoryrealityint00godf/page/n53 39]–56 |chapter=Induction and confirmation |url-access=limited}}</ref> Empiricism generally encompasses [[inductivism]], a position that explains how general theories can be made from the finite amount of empirical evidence available. Many versions of empiricism exist, with the predominant ones being [[Bayesianism]]<ref name="Godfrey-Smith2003o">{{cite book |last=Godfrey-Smith |first=Peter |url=https://archive.org/details/theoryrealityint00godf |title=Theory and Reality: An Introduction to the Philosophy of Science |publisher=University of Chicago |year=2003o |isbn=978-0-226-30062-7 |location=Chicago |pages=[https://archive.org/details/theoryrealityint00godf/page/n233 219]–232 |chapter=Empiricism, naturalism, and scientific realism? |url-access=limited}}</ref> and the [[hypothetico-deductive method]].<ref name="Godfrey-Smith2003c" />

Empiricism has stood in contrast to [[rationalism]], the position originally associated with [[Descartes]], which holds that knowledge is created by the human intellect, not by observation.<ref name="Godfrey-Smith2003b">{{cite book |last=Godfrey-Smith |first=Peter |url=https://archive.org/details/theoryrealityint00godf |title=Theory and Reality: An Introduction to the Philosophy of Science |publisher=University of Chicago |year=2003b |isbn=978-0-226-30062-7 |location=Chicago |pages=[https://archive.org/details/theoryrealityint00godf/page/n33 19]–38 |chapter=Logic plus empiricism |url-access=limited}}</ref> [[Critical rationalism]] is a contrasting 20th-century approach to science, first defined by Austrian-British philosopher [[Karl Popper]]. Popper rejected the way that empiricism describes the connection between theory and observation. He claimed that theories are not generated by observation, but that observation is made in the light of theories: that the only way theory A can be affected by observation is after theory A were to conflict with observation, but theory B were to survive the observation.<ref name="Godfrey-Smith2003d">{{cite book |last=Godfrey-Smith |first=Peter |url=https://archive.org/details/theoryrealityint00godf |title=Theory and Reality: An Introduction to the Philosophy of Science |publisher=University of Chicago |year=2003d |isbn=978-0-226-30062-7 |location=Chicago |pages=[https://archive.org/details/theoryrealityint00godf/page/n71 57]–74 |chapter=Popper: Conjecture and refutation |url-access=limited}}</ref>
Popper proposed replacing verifiability with [[falsifiability]] as the landmark of scientific theories, replacing induction with [[Critical rationalism|falsification]] as the empirical method.<ref name="Godfrey-Smith2003d" /> Popper further claimed that there is actually only one universal method, not specific to science: the negative method of criticism, [[trial and error]],<ref name="Godfrey-Smith2003g">{{cite book |last=Godfrey-Smith |first=Peter |url=https://archive.org/details/theoryrealityint00godf |title=Theory and Reality: An Introduction to the Philosophy of Science |publisher=University of Chicago |year=2003g |isbn=978-0-226-30062-7 |location=Chicago |pages=[https://archive.org/details/theoryrealityint00godf/page/n116 102]–121 |chapter=Lakatos, Laudan, Feyerabend, and frameworks |url-access=limited}}</ref> covering all products of the human mind, including science, mathematics, philosophy, and art.<ref>{{Cite book |last=Popper |first=Karl |title=Objective Knowledge |year=1972}}</ref>

Another approach, [[instrumentalism]], emphasizes the utility of theories as instruments for explaining and predicting phenomena. It views scientific theories as black boxes with only their input (initial conditions) and output (predictions) being relevant. Consequences, theoretical entities, and logical structure are claimed to be something that should be ignored.<ref>{{cite book |author=Newton-Smith, W.H. |url=https://archive.org/details/rationalityofsci0000newt |title=The Rationality of Science |publisher=Routledge |year=1994 |isbn=978-0-7100-0913-5 |location=London |page=[https://archive.org/details/rationalityofsci0000newt/page/30 30] |url-access=registration}}</ref> Close to instrumentalism is [[constructive empiricism]], according to which the main criterion for the success of a scientific theory is whether what it says about observable entities is true.<ref>{{cite thesis|last=Votsis|first=I.|year=2004|title=The Epistemological Status of Scientific Theories: An Investigation of the Structural Realist Account|publisher=University of London, London School of Economics|type=PhD Thesis|page=39}}</ref>

[[Thomas Kuhn]] argued that the process of observation and evaluation takes place within a paradigm, a [[logically consistent]] "portrait" of the world that is consistent with observations made from its framing. He characterized ''normal science'' as the process of observation and "puzzle solving" which takes place within a paradigm, whereas ''revolutionary science'' occurs when one paradigm overtakes another in a [[paradigm shift]].<ref>{{Cite journal |last=Bird |first=Alexander |year=2013 |editor1-last=Zalta |editor1-first=Edward N. |title=Thomas Kuhn |url=http://plato.stanford.edu/archives/fall2013/entries/thomas-kuhn/ |url-status=live |archive-url=https://web.archive.org/web/20200715191833/https://plato.stanford.edu/archives/fall2013/entries/thomas-kuhn/ |archive-date=July 15, 2020 |access-date=October 26, 2015 |website=Stanford Encyclopedia of Philosophy}}</ref> Each paradigm has its own distinct questions, aims, and interpretations. The choice between paradigms involves setting two or more "portraits" against the world and deciding which likeness is most promising. A paradigm shift occurs when a significant number of observational anomalies arise in the old paradigm and a new paradigm makes sense of them. That is, the choice of a new paradigm is based on observations, even though those observations are made against the background of the old paradigm. For Kuhn, acceptance or rejection of a paradigm is a social process as much as a logical process. Kuhn's position, however, is not one of [[relativism]].<ref name="KuhnP206">{{Cite book |last=Kuhn |first=Thomas S. |url=https://philpapers.org/rec/KUHTSO-2 |title=The Structure of Scientific Revolutions |publisher=[[University of Chicago Press]] |year=1970 |isbn=978-0-226-45804-5 |edition=2nd |page=206 |access-date=May 30, 2022 |archive-date=October 19, 2021 |archive-url=https://web.archive.org/web/20211019102817/https://philpapers.org/rec/KUHTSO-2 |url-status=live }}</ref>

Finally, another approach often cited in debates of [[scientific skepticism]] against controversial movements like "[[creation science]]" is [[methodological naturalism]]. Naturalists maintain that a difference should be made between natural and supernatural, and science should be restricted to natural explanations.<ref name="Godfrey-Smith2003">{{cite book |last=Godfrey-Smith |first=Peter |url=https://archive.org/details/theoryrealityint00godf |title=Theory and Reality: An Introduction to the Philosophy of Science |publisher=University of Chicago |year=2003 |isbn=978-0-226-30062-7 |location=Chicago |pages=[https://archive.org/details/theoryrealityint00godf/page/n163 149]–162 |chapter=Naturalistic philosophy in theory and practice |url-access=limited}}</ref> Methodological naturalism maintains that science requires strict adherence to [[empirical]] study and independent verification.<ref>{{cite journal |author=Brugger, E. Christian |year=2004 |title=Casebeer, William D. Natural Ethical Facts: Evolution, Connectionism, and Moral Cognition |journal=The Review of Metaphysics |volume=58 |issue=2}}</ref>

== Scientific community ==
The [[scientific community]] is a network of interacting scientists who conducts scientific research. The community consists of smaller groups working in scientific fields. By having [[peer review]], through discussion and debate within journals and conferences, scientists maintain the quality of research methodology and objectivity when interpreting results.<ref name="SCMet">{{cite journal |last1=Kornfeld |first1=W |last2=Hewitt |first2=CE |year=1981 |title=The Scientific Community Metaphor |url=http://dspace.mit.edu/bitstream/handle/1721.1/5693/AIM-641.pdf?sequence=2 |journal= IEEE Transactions on Systems, Man, and Cybernetics|volume=  11|issue=1 |pages=24–33 |doi=10.1109/TSMC.1981.4308575 |hdl-access=free |hdl=1721.1/5693 |s2cid=1322857 |access-date=May 26, 2022 |archive-date=April 8, 2016 |archive-url=https://web.archive.org/web/20160408100757/http://dspace.mit.edu/bitstream/handle/1721.1/5693/AIM-641.pdf?sequence=2 |url-status=live }}</ref>

=== Scientists ===
[[File:Marie Curie c1920.jpg|thumb|upright=.8|[[Marie Curie]] was the first person to be awarded two Nobel Prizes: [[Nobel Prize in Physics|Physics]] in 1903 and [[Nobel Prize in Chemistry|Chemistry]] in 1911<ref name="psb113" />|alt=Portrait of a middle-aged woman]]
Scientists are individuals who conduct scientific research to advance knowledge in an area of interest.<ref name="eowilsonfoundation">{{cite web | url = https://eowilsonfoundation.org/wp-content/uploads/2014/11/the-big-read-eusocial-climbers.pdf | title = Eusocial climbers | publisher = E.O. Wilson Foundation | access-date = September 3, 2018 | quote = But he's not a scientist, he's never done scientific research. My definition of a scientist is that you can complete the following sentence: 'he or she has shown that...'," Wilson says. | archive-date = April 27, 2019 | archive-url = https://web.archive.org/web/20190427085753/https://eowilsonfoundation.org/wp-content/uploads/2014/11/the-big-read-eusocial-climbers.pdf | url-status = live }}</ref><ref name="researchcouncil">{{cite web | url = https://sciencecouncil.org/about-science/our-definition-of-a-scientist/ | title = Our definition of a scientist | publisher = Science Council | access-date = September 7, 2018 | quote = A scientist is someone who systematically gathers and uses research and evidence, making a hypothesis and testing it, to gain and share understanding and knowledge. | archive-date = August 23, 2019 | archive-url = https://web.archive.org/web/20190823135636/https://sciencecouncil.org/about-science/our-definition-of-a-scientist/ | url-status = live }}</ref> In modern times, many professional scientists are trained in an academic setting and upon completion, attain an [[academic degree]], with the highest degree being a doctorate such as a Doctor of Philosophy or PhD.<ref name="Cyranoski2011">{{cite journal | last1 = Cyranoski | first1 = David | last2 = Gilbert | first2 = Natasha | last3 = Ledford | first3 = Heidi | last4 = Nayar | first4 = Anjali | author4-link = Anjali Nayar | last5 = Yahia | first5 = Mohammed | year = 2011 | title = Education: The PhD factory | journal = Nature | volume = 472 | issue = 7343 | pages = 276–79 | doi = 10.1038/472276a | pmid = 21512548 | bibcode = 2011Natur.472..276C | doi-access = free }}</ref> Many scientists pursue careers in various [[Sector (economic)|sectors of the economy]] such as [[Academy|academia]], [[Private sector|industry]], [[Administration (government)|government]], and nonprofit organizations.<ref name="Kwok2017">{{cite journal | last1 = Kwok | first1 = Roberta | title = Flexible working: Science in the gig economy | journal = Nature | volume = 550 | pages = 419–21 | doi = 10.1038/nj7677-549a| year = 2017 | doi-access = free }}</ref><ref name="Editorial2017a">{{cite journal | year = 2007 | title = Many junior scientists need to take a hard look at their job prospects | journal = Nature | editor = Editorial | volume = 550 | pages = 549–552 | doi = 10.1038/nj7677-549a | last1 = Woolston | first1 = Chris | doi-access = free }}</ref><ref name="Woolston2017">{{cite journal | last1 = Lee | first1 = Adrian | last2 = Dennis | first2 = Carina | last3 = Campbell | first3 = Phillip | year = 2007 | title = Graduate survey: A love–hurt relationship | journal = Nature | volume = 550 | issue = 7677 | pages = 549–52 | doi = 10.1038/nj7677-549a| doi-access = free }}</ref>

Scientists exhibit a strong curiosity about reality and a desire to apply scientific knowledge for the benefit of health, nations, the environment, or industries. Other motivations include recognition by their peers and prestige. In modern times, many scientists have [[Terminal degree|advanced degrees]]<ref name="Cyranoski20112">{{cite journal |last1=Cyranoski |first1=David |last2=Gilbert |first2=Natasha |last3=Ledford |first3=Heidi |last4=Nayar |first4=Anjali |last5=Yahia |first5=Mohammed |year=2011 |title=Education: The PhD factory |journal=Nature |volume=472 |issue=7343 |pages=276–279 |bibcode=2011Natur.472..276C |doi=10.1038/472276a |pmid=21512548 |doi-access=free}}</ref> in an area of science and pursue careers in various sectors of the economy such as [[Academy|academia]], [[Private industry|industry]], [[Government scientist|government]], and nonprofit environments.<ref name="Kwok20172">{{cite journal |last1=Kwok |first1=Roberta |year=2017 |title=Flexible working: Science in the gig economy |journal=Nature |volume=550 |pages=419–421 |doi=10.1038/nj7677-549a |doi-access=free}}</ref>''<ref name="Woolston20172">{{cite journal |last1=Lee |first1=Adrian |last2=Dennis |first2=Carina |last3=Campbell |first3=Phillip |year=2007 |title=Graduate survey: A love–hurt relationship |journal=Nature |volume=550 |issue=7677 |pages=549–552 |doi=10.1038/nj7677-549a |doi-access=free}}</ref>''

Science has historically been a male-dominated field, with notable exceptions. [[Women in science]] faced considerable discrimination in science, much as they did in other areas of male-dominated societies. For example, women were frequently being passed over for job opportunities and denied credit for their work.<ref name="Whaley">{{cite book|last=Whaley|first=Leigh Ann|title=Women's History as Scientists|location=Santa Barbara, California|publisher=ABC-CLIO, INC.|year=2003}}</ref> The achievements of women in science have been attributed to the defiance of their traditional role as laborers within the [[Private sphere|domestic sphere]].<ref>{{Cite book |last=Spanier |first=Bonnie |title=Im/partial Science: Gender Identity in Molecular Biology |publisher=Indiana University Press |year=1995 |isbn=978-0-253-20968-9 |chapter=From Molecules to Brains, Normal Science Supports Sexist Beliefs about Difference}}</ref>

=== Learned societies ===
[[File:200_y_Anniversary_of_Berlin_Academy_1900.jpg|thumb|250x250px|Picture of scientists in 200th anniversary of the [[Prussian Academy of Sciences]], 1900|left]]
[[Learned society|Learned societies]] for the communication and promotion of scientific thought and experimentation have existed since the Renaissance.<ref>{{cite web | last= Parrott | first= Jim | date= August 9, 2007 | url= http://www.scholarly-societies.org/1599andearlier.html | title=Chronicle for Societies Founded from 1323 to 1599 | publisher= Scholarly Societies Project | access-date= September 11, 2007 | url-status=live | archive-url= https://web.archive.org/web/20140106185404/http://www.scholarly-societies.org/1599andearlier.html | archive-date= January 6, 2014 }}</ref> Many scientists belong to a learned society that promotes their respective scientific discipline, [[profession]], or group of related disciplines.<ref>{{cite web|url= http://www.esac.ca/about/what-is-a-learned-society/|title= The Environmental Studies Association of Canada – What is a Learned Society?|access-date= May 10, 2013|url-status=dead|archive-url= https://web.archive.org/web/20130529163615/http://www.esac.ca/about/what-is-a-learned-society/|archive-date= May 29, 2013}}</ref> Membership may either be open to all, require possession of scientific credentials, or conferred by election.<ref name="auto">{{cite web|url= http://www.britishcouncil.org/science-uk-organisations-learned-societies.htm|title= Learned societies & academies|access-date= May 10, 2013|url-status=dead|archive-url= https://web.archive.org/web/20140603140851/http://www.britishcouncil.org/science-uk-organisations-learned-societies.htm|archive-date= June 3, 2014}}</ref> Most scientific societies are non-profit organizations,<ref>{{Cite web |date=2019-06-24 |title=Learned Societies, the key to realising an open access future? |url=https://blogs.lse.ac.uk/impactofsocialsciences/2019/06/24/learned-societies-the-key-to-realising-an-open-access-future/ |access-date=2023-01-22 |website=Impact of Social Sciences|publisher=London School of Economics}}</ref> and many are [[professional association]]s. Their activities typically include holding regular [[academic conference|conferences]] for the presentation and discussion of new research results and publishing or sponsoring [[academic journal]]s in their discipline. Some societies act as [[professional bodies]], regulating the activities of their members in the public interest, or the collective interest of the membership.

The professionalization of science, begun in the 19th century, was partly enabled by the creation of national distinguished [[academy of sciences|academies of sciences]] such as the Italian {{lang|it|[[Accademia dei Lincei]]}} in 1603,<ref>{{cite web | year=2006 | url= http://positivamente.lincei.it/ | title= Accademia Nazionale dei Lincei | language=it | access-date= September 11, 2007 | url-status=live | archive-url= https://web.archive.org/web/20100228005402/http://positivamente.lincei.it/ | archive-date= February 28, 2010 }}</ref> the British [[Royal Society]] in 1660,<ref name="pw">{{cite web |date=July 7, 2004 |title=Prince of Wales opens Royal Society's refurbished building |url=http://royalsociety.org/News.aspx?id=973&terms=prince+of+wales |access-date=December 7, 2009 |publisher=The Royal Society |archive-date=April 9, 2015 |archive-url=https://web.archive.org/web/20150409010143/https://royalsociety.org/News.aspx?id=973&terms=prince+of+wales |url-status=live }}</ref> the [[French Academy of Sciences]] in 1666,<ref>{{cite web | first= G.G. | last= Meynell | url= http://www.haven.u-net.com/6text_7B2.htm#Appendix%202 | title= The French Academy of Sciences, 1666–91: A reassessment of the French Académie royale des sciences under Colbert (1666–83) and Louvois (1683–91) | access-date= October 13, 2011 | url-status=dead | archive-url= https://web.archive.org/web/20120118174108/http://www.haven.u-net.com/6text_7B2.htm#Appendix%202 | archive-date= January 18, 2012 }}</ref> the American [[National Academy of Sciences]] in 1863,<ref>{{cite web |author=ITS |title=Founding of the National Academy of Sciences |url=http://www7.nationalacademies.org/archives/nasfounding.html |access-date=March 12, 2012 |publisher=.nationalacademies.org |archive-date=February 3, 2013 |archive-url=https://web.archive.org/web/20130203154802/http://www7.nationalacademies.org/archives/nasfounding.html |url-status=live }}</ref> the German [[Kaiser Wilhelm Society]] in 1911,<ref>{{Cite web |title=The founding of the Kaiser Wilhelm Society (1911) |url=https://www.mpg.de/946619/5_event2-1911 |access-date=May 30, 2022 |publisher=Max-Planck-Gesellschaft |language=en |archive-date=March 2, 2022 |archive-url=https://web.archive.org/web/20220302052520/https://www.mpg.de/946619/5_event2-1911 |url-status=live }}</ref> and the [[Chinese Academy of Sciences]] in 1949.<ref>{{Cite web |title=Introduction |url=https://english.cas.cn/about_us/introduction/201501/t20150114_135284.shtml |access-date=May 31, 2022 |website=Chinese Academy of Sciences |archive-date=March 31, 2022 |archive-url=https://web.archive.org/web/20220331215338/https://english.cas.cn/about_us/introduction/201501/t20150114_135284.shtml |url-status=live }}</ref> International scientific organizations, such as the [[International Science Council]], are devoted to [[international cooperation]] for science advancement.<ref>{{Cite web |date=July 5, 2018 |title=Two main Science Councils merge to address complex global challenges |url=https://en.unesco.org/news/two-main-science-councils-merge-address-complex-global-challenges |access-date=October 21, 2018 |publisher=UNESCO |language=en |archive-date=July 12, 2021 |archive-url=https://web.archive.org/web/20210712044005/https://en.unesco.org/news/two-main-science-councils-merge-address-complex-global-challenges |url-status=live }}</ref>

=== Awards ===
[[Lists of science and technology awards|Science award]]s are usually given to individuals or organizations that have made significant contributions to a discipline. They are often given by prestigious institutions, thus it is considered a great honor for a scientist receiving them. Since the early Renaissance, scientists are often awarded medals, money, and titles. The Nobel Prize, a widely regarded prestigious award, is awarded annually to those who have achieved scientific advances in the fields of medicine, [[physics]], and [[chemistry]].<ref name="Stockton2014">{{cite news |last=Stockton |first=Nick |date=October 7, 2014 |title=How did the Nobel Prize become the biggest award on Earth? |newspaper=Wired |url=https://www.wired.com/2014/10/whats-nobel-prize-become-biggest-award-planet |url-status=live |access-date=September 3, 2018 |archive-url=https://web.archive.org/web/20190619044702/https://www.wired.com/2014/10/whats-nobel-prize-become-biggest-award-planet/ |archive-date=June 19, 2019}}</ref>

== Society ==
{{Redirect-distinguish|Science and society|Science & Society|Sociology of scientific knowledge}}

=== Funding and policies ===
[[File:NASA-Budget-Federal.svg|thumb|300x300px|[[Budget of NASA]] as percentage of [[United States federal budget]], peaking at 4.4% in 1966 and slowly declining since|alt=see caption]]
[[Funding of science|Scientific research is often funded]] through a competitive process in which potential research projects are evaluated and only the most promising receive funding. Such processes, which are run by government, corporations, or foundations, allocate scarce funds. Total research funding in most [[developed country|developed countries]] is between 1.5% and 3% of GDP.<ref name="OECD2008">{{cite web |url= http://www.oecd.org/dataoecd/49/45/24236156.pdf |title= Main Science and Technology Indicators&nbsp;– 2008-1 |publisher= [[OECD]] |url-status=dead |archive-url= https://web.archive.org/web/20100215172528/http://www.oecd.org/dataoecd/49/45/24236156.pdf |archive-date= February 15, 2010 }}</ref> In the [[OECD]], around two-thirds of [[research and development]] in scientific and technical fields is carried out by industry, and 20% and 10% respectively by universities and government. The government funding proportion in certain fields is higher, and it dominates research in social science and [[humanities]]. In the lesser-developed nations, government provides the bulk of the funds for their basic scientific research.<ref name= oecd>{{Cite book |url=http://www.oecd-ilibrary.org/science-and-technology/oecd-science-technology-and-industry-scoreboard-2015_sti_scoreboard-2015-en |title=OECD Science, Technology and Industry Scoreboard 2015: Innovation for growth and society |publisher=OECD |year=2015 |isbn=978-9264239784 |page=156 |doi=10.1787/sti_scoreboard-2015-en |via=oecd-ilibrary.org |access-date=May 28, 2022 |archive-date=May 25, 2022 |archive-url=https://web.archive.org/web/20220525063455/https://www.oecd-ilibrary.org/science-and-technology/oecd-science-technology-and-industry-scoreboard-2015_sti_scoreboard-2015-en |url-status=live }}</ref>

Many governments have dedicated agencies to support scientific research, such as the [[National Science Foundation]] in the United States,<ref name="j2">{{cite journal |last=Kevles |first=Daniel |year=1977 |title=The National Science Foundation and the Debate over Postwar Research Policy, 1942-1945 |journal=Isis |volume=68 |issue=241 |pages=4–26 |doi=10.1086/351711 |pmid=320157 |s2cid=32956693}}</ref> the [[National Scientific and Technical Research Council]] in Argentina,<ref>{{Cite web |title=Argentina, National Scientific and Technological Research Council (CONICET) |url=https://council.science/member/argentina-national-scientific-and-technological-research-council-conicet/ |access-date=May 31, 2022 |website=International Science Council |language=en-US |archive-date=May 16, 2022 |archive-url=https://web.archive.org/web/20220516220311/https://council.science/member/argentina-national-scientific-and-technological-research-council-conicet/ |url-status=live }}</ref> [[Commonwealth Scientific and Industrial Research Organisation|Commonwealth Scientific and Industrial Research Organization]] in Australia,<ref>{{Cite news |last=Innis |first=Michelle |date=May 17, 2016 |title=Australia to Lay Off Leading Scientist on Sea Levels |language=en-US |work=The New York Times |url=https://www.nytimes.com/2016/05/18/world/australia/australia-to-lay-off-leading-scientist-on-sea-levels.html |url-status=live |url-access=limited |access-date=May 31, 2022 |archive-url=https://web.archive.org/web/20210507080237/https://www.nytimes.com/2016/05/18/world/australia/australia-to-lay-off-leading-scientist-on-sea-levels.html |archive-date=May 7, 2021 |issn=0362-4331}}</ref> [[French National Centre for Scientific Research|National Centre for Scientific Research]] in France,<ref>{{Cite web |date=October 20, 2021 |title=Le CNRS recherche 10.000 passionnés du blob |url=https://www.lefigaro.fr/flash-actu/le-cnrs-recherche-10-000-passionnes-du-blob-20211020 |access-date=May 31, 2022 |website=[[Le Figaro]] |language=fr |archive-date=April 27, 2022 |archive-url=https://web.archive.org/web/20220427225305/https://www.lefigaro.fr/flash-actu/le-cnrs-recherche-10-000-passionnes-du-blob-20211020 |url-status=live }}</ref> the [[Max Planck Society]] in Germany,<ref>{{Cite news |last=Bredow |first=Rafaela von |date=December 18, 2021 |title=How a Prestigious Scientific Organization Came Under Suspicion of Treating Women Unequally |language=en |work=Der Spiegel |url=https://www.spiegel.de/international/germany/how-a-prestigious-scientific-organization-came-under-suspicion-of-treating-women-unequally-a-96da63b5-19af-4fde-b044-445f9cfd6159 |access-date=May 31, 2022 |issn=2195-1349 |archive-date=May 29, 2022 |archive-url=https://web.archive.org/web/20220529004707/https://www.spiegel.de/international/germany/how-a-prestigious-scientific-organization-came-under-suspicion-of-treating-women-unequally-a-96da63b5-19af-4fde-b044-445f9cfd6159 |url-status=live }}</ref> and [[Spanish National Research Council|National Research Council]] in Spain.<ref>{{Cite web |date=May 12, 2022 |title=En espera de una "revolucionaria" noticia sobre Sagitario A*, el agujero negro supermasivo en el corazón de nuestra galaxia |url=https://www.elmundo.es/ciencia-y-salud/ciencia/2022/05/12/627cca26fdddff17068b4590.html |access-date=May 31, 2022 |website=ELMUNDO |language=es |archive-date=May 13, 2022 |archive-url=https://web.archive.org/web/20220513185034/https://www.elmundo.es/ciencia-y-salud/ciencia/2022/05/12/627cca26fdddff17068b4590.html |url-status=live }}</ref> In commercial research and development, all but the most research-oriented corporations focus more heavily on near-term commercialization possibilities rather than research driven by curiosity.<ref>{{Cite journal |last1=Fletcher |first1=Anthony C. |last2=Bourne |first2=Philip E. |date=September 27, 2012 |title=Ten Simple Rules To Commercialize Scientific Research |journal=PLOS Computational Biology |volume=8 |issue=9 |pages=e1002712 |doi=10.1371/journal.pcbi.1002712 |issn=1553-734X |pmc=3459878 |pmid=23028299|bibcode=2012PLSCB...8E2712F |doi-access=free }}</ref>

[[Science policy]] is concerned with policies that affect the conduct of the scientific enterprise, including [[research funding]], often in pursuance of other national policy goals such as technological innovation to promote commercial product development, weapons development, health care, and environmental monitoring. Science policy sometimes refers to the act of applying scientific knowledge and consensus to the development of public policies. In accordance with public policy being concerned about the well-being of its citizens, science policy's goal is to consider how science and technology can best serve the public.<ref>{{Cite book |last=Marburger |first=John Harmen III|title=Science policy up close |date=February 10, 2015 |others=Crease, Robert P. |isbn=978-0-674-41709-0 |location=Cambridge, Massachusetts |oclc=875999943 |publisher=Harvard University Press}}</ref> Public policy can directly affect the funding of [[capital equipment]] and intellectual infrastructure for industrial research by providing tax incentives to those organizations that fund research.<ref name="bush1945" />

=== Education and awareness ===
{{Main|2 = Public awareness of science|3 = Science journalism}}
[[File:Dinosaur exhibit - Houston Museum of Natural Science - DSC01881.JPG|thumb|250px|left|Dinosaur exhibit in the [[Houston Museum of Natural Science]]]]
[[Science education]] for the general public is embedded in the school curriculum, and is supplemented by [[YouTube in education|online pedagogical content]] (for example, YouTube and Khan Academy), museums, and science magazines and blogs. Scientific literacy is chiefly concerned with an understanding of the [[scientific method]], units and methods of [[measurement]], [[empiricism]], a basic understanding of statistics ([[correlations]], [[Qualitative research|qualitative]] versus [[Quantitative research|quantitative]] observations, [[aggregate statistics]]), as well as a basic understanding of core scientific fields, such as [[physics]], [[chemistry]], [[biology]], ecology, geology and [[computation]]. As a student advances into higher stages of [[formal education]], the curriculum becomes more in depth. Traditional subjects usually included in the curriculum are natural and formal sciences, although recent movements include social and applied science as well.<ref name=":1">{{Cite journal |last1=Benneworth |first1=Paul |last2=Jongbloed |first2=Ben W. |date=July 31, 2009 |title=Who matters to universities? A stakeholder perspective on humanities, arts and social sciences valorisation |journal=Higher Education |volume=59 |issue=5 |pages=567–588 |doi=10.1007/s10734-009-9265-2 |issn=0018-1560 |doi-access=free|url=https://ris.utwente.nl/ws/files/47901538/Benneworth2010Who.pdf }}</ref>

The mass media face pressures that can prevent them from accurately depicting competing scientific claims in terms of their credibility within the scientific community as a whole. Determining how much weight to give different sides in a [[scientific debate]] may require considerable expertise regarding the matter.<ref>{{cite web |last=Dickson |first=David |date=October 11, 2004 |title=Science journalism must keep a critical edge |url=http://www.scidev.net/en/editorials/science-journalism-must-keep-a-critical-edge.html |archive-url=https://web.archive.org/web/20100621053624/http://www.scidev.net/en/editorials/science-journalism-must-keep-a-critical-edge.html |archive-date=June 21, 2010 |publisher=Science and Development Network}}</ref> Few journalists have real scientific knowledge, and even [[beat reporter]]s who are knowledgeable about certain scientific issues may be ignorant about other scientific issues that they are suddenly asked to cover.<ref>{{cite magazine |last=Mooney |first=Chris |date=Nov–Dec 2004 |title=Blinded By Science, How 'Balanced' Coverage Lets the Scientific Fringe Hijack Reality |url=http://blogs.discovermagazine.com/intersection/2010/01/15/blinded-by-science-how-balanced-coverage-lets-the-scientific-fringe-hijack-reality/ |url-status=live |magazine=Columbia Journalism Review |volume=43 |issue=4 |archive-url=https://web.archive.org/web/20100117181240/http://blogs.discovermagazine.com/intersection/2010/01/15/blinded-by-science-how-balanced-coverage-lets-the-scientific-fringe-hijack-reality/ |archive-date=January 17, 2010 |access-date=February 20, 2008}}</ref><ref>{{cite journal |last1=McIlwaine |first1=S. |last2=Nguyen |first2=D.A. |year=2005 |title=Are Journalism Students Equipped to Write About Science? |url=http://espace.library.uq.edu.au/view/UQ:8064 |url-status=live |journal=Australian Studies in Journalism |volume=14 |pages=41–60 |archive-url=https://web.archive.org/web/20080801163322/http://espace.library.uq.edu.au/view/UQ:8064 |archive-date=August 1, 2008 |access-date=February 20, 2008}}</ref>

[[List of science magazines|Science magazines]] such as ''[[New Scientist]]'', ''[[Science & Vie]]'', and ''[[Scientific American]]'' cater to the needs of a much wider readership and provide a non-technical summary of popular areas of research, including notable discoveries and advances in certain fields of research.<ref name="pmid24312943">{{cite journal |author-last=Webb | author-first=Sarah |title=Popular science: Get the word out |journal=Nature |volume=504 |issue=7478 |pages=177–9 |date=December 2013 |pmid=24312943 |doi=10.1038/nj7478-177a |doi-access=free }}</ref> Science fiction genre, primarily [[speculative fiction]], can transmit the ideas and methods of science to the general public.<ref>{{Cite web |last=Wilde |first=Fran |author-link=Fran Wilde (author) |date=January 21, 2016 |title=How Do You Like Your Science Fiction? Ten Authors Weigh In On 'Hard' vs. 'Soft' SF |url=https://www.tor.com/2016/01/21/how-do-you-like-your-science-fiction-ten-authors-weigh-in-on-hard-vs-soft-sf/ |url-status=live |archive-url=https://web.archive.org/web/20190404025029/https://www.tor.com/2016/01/21/how-do-you-like-your-science-fiction-ten-authors-weigh-in-on-hard-vs-soft-sf/ |archive-date=April 4, 2019 |access-date=April 4, 2019 |website=Tor.com |language=en-US}}</ref> Recent efforts to intensify or develop links between science and non-scientific disciplines, such as literature or poetry, include the ''Creative Writing Science'' resource developed through the [[Royal Literary Fund]].<ref>{{cite web | first= Mario | last= Petrucci | url= http://writeideas.org.uk/creativescience/index.htm | title= Creative Writing&nbsp;– Science | access-date=April 27, 2008 | url-status=dead | archive-url= https://web.archive.org/web/20090106015539/http://writeideas.org.uk/creativescience/index.htm | archive-date= January 6, 2009 }}</ref>

=== Anti-science attitudes ===
{{main|Antiscience}}
While the scientific method is broadly accepted in the scientific community, some fractions of society reject certain scientific positions or are skeptical about science. Examples are the common notion that [[COVID-19]] is not a major health threat to the US (held by 39% of Americans in August 2021)<ref>{{Cite web |last1=Tyson |first1=Alec |last2=Funk |first2=Cary |last3=Kennedy |first3=Brian |last4=Johnson |first4=Courtney |date=September 15, 2021 |title=Majority in U.S. Says Public Health Benefits of COVID-19 Restrictions Worth the Costs, Even as Large Shares Also See Downsides |url=https://www.pewresearch.org/science/2021/09/15/majority-in-u-s-says-public-health-benefits-of-covid-19-restrictions-worth-the-costs-even-as-large-shares-also-see-downsides/ |access-date=August 4, 2022 |website=Pew Research Center Science & Society |language=en-US}}</ref> or the belief that [[climate change]] is not a major threat to the US (also held by 40% of Americans, in late 2019 and early 2020).<ref>{{Cite web |last=Kennedy |first=Brian |title=U.S. concern about climate change is rising, but mainly among Democrats |url=https://www.pewresearch.org/fact-tank/2020/04/16/u-s-concern-about-climate-change-is-rising-but-mainly-among-democrats/ |access-date=August 4, 2022 |website=Pew Research Center |language=en-US}}</ref> [[Psychologist]]s have pointed to four factors driving rejection of scientific results:<ref>{{Cite journal |last1=Philipp-Muller |first1=Aviva |last2=Lee |first2=Spike W. S. |last3=Petty |first3=Richard E. |date=July 26, 2022 |title=Why are people antiscience, and what can we do about it? |journal=Proceedings of the National Academy of Sciences |language=en |volume=119 |issue=30 |pages=e2120755119 |doi=10.1073/pnas.2120755119 |doi-access=free |issn=0027-8424 |pmc=9335320 |pmid=35858405|bibcode=2022PNAS..11920755P }}</ref>
* Scientific authorities are sometimes seen as inexpert, untrustworthy, or biased.
* Some [[Social exclusion|marginalized]] [[social groups]] hold anti-science attitudes, in part because these groups have often been exploited in [[Unethical human experimentation|unethical experiments]].<ref>{{cite journal |title=A Test of Three Theories of Anti-Science Attitudes |year=2008 |doi=10.1080/00380237.2008.10571338 |last1=Gauchat |first1=Gordon William |journal=Sociological Focus |volume=41 |issue=4 |pages=337–357 |s2cid=144645723 }}</ref>
* Messages from scientists may contradict deeply-held existing beliefs or morals.
* The ''delivery'' of a scientific message may not be appropriately targeted to a recipient's learning style.
Anti-science attitudes seem to be often caused by fear of rejection in social groups. For instance, climate change is perceived as a threat by only 22% of Americans on the right side of the political spectrum, but by 85% on the left.<ref>{{Cite web |last1=Poushter |first1=Jacob |last2=Fagan |first2=Moira |last3=Gubbala |first3=Sneha |date=August 31, 2022 |title=Climate Change Remains Top Global Threat Across 19-Country Survey |url=https://www.pewresearch.org/global/2022/08/31/climate-change-remains-top-global-threat-across-19-country-survey/ |access-date=September 5, 2022 |website=Pew Research Center's Global Attitudes Project |language=en-US}}</ref> That is, if someone on the left would not consider climate change as a threat, this person may face contempt and be rejected in that social group. In fact, people may rather deny a scientifically accepted fact than lose or jeopardize their social status.<ref>{{Cite book |last=McRaney |first=David |url=https://www.worldcat.org/oclc/1322437138 |title=How Minds Change: The Surprising Science of Belief, Opinion, and Persuasion |publisher=Portfolio/Penguin |date=2022 |isbn=978-0-593-19029-6 |location=[New York, NY] |oclc=1322437138}}</ref>

=== Politics ===
[[File:2021 Survey on existence of global warming and responsibility for climate change - bar chart.svg|alt=Result in bar graph of two questions ("Is global warming occurring?" and "Are oil/gas companies responsible?"), showing large discrepancies between American Democrats and Republicans|thumb|[[Public opinion on global warming#United States|Public opinion on global warming in the United States]] by political party<ref>{{cite news |last1=McGreal |first1=Chris |date=October 26, 2021 |title=Revealed: 60% of Americans say oil firms are to blame for the climate crisis |work=The Guardian |url=https://www.theguardian.com/environment/2021/oct/26/climate-change-poll-oil-gas-companies-environment |url-status=live |archive-url=https://web.archive.org/web/20211026122356/https://www.theguardian.com/environment/2021/oct/26/climate-change-poll-oil-gas-companies-environment |archive-date=October 26, 2021 |quote=Source: Guardian/Vice/CCN/YouGov poll. Note: ±4% margin of error.}}</ref>|300x300px]]Attitudes towards science are often determined by political opinions and goals. Government, business and [[advocacy group]]s have been known to use legal and economic pressure to influence scientific researchers. Many factors can act as facets of the [[politicization of science]] such as [[anti-intellectualism]], perceived threats to religious beliefs, and fear for business interests.<ref>{{cite journal |last1=Goldberg |first1=Jeanne |year=2017 |title=The Politicization of Scientific Issues: Looking through Galileo's Lens or through the Imaginary Looking Glass |url=https://www.csicop.org/si/show/politicization_of_scientific_issues |url-status=dead |journal=[[Skeptical Inquirer]] |volume=41 |issue=5 |pages=34–39 |archive-url=https://web.archive.org/web/20180816182350/https://www.csicop.org/si/show/politicization_of_scientific_issues |archive-date=August 16, 2018 |access-date=August 16, 2018}}</ref> Politicization of science is usually accomplished when scientific information is presented in a way that emphasizes the uncertainty associated with the scientific evidence.<ref>{{cite journal |last1=Bolsen |first1=Toby |last2=Druckman |first2=James N. |author2-link=James N. Druckman |year=2015 |title=Counteracting the Politicization of Science |journal=Journal of Communication |issue=65 |page=746}}</ref> Tactics such as shifting conversation, failing to acknowledge facts, and capitalizing on doubt of [[scientific consensus]] have been used to gain more attention for views that have been undermined by scientific evidence.<ref name="Freudenberg 2008">{{cite journal |last1=Freudenberg |first1=William F. |last2=Gramling |first2=Robert |last3=Davidson |first3=Debra J. |year=2008 |title=Scientific Certainty Argumentation Methods (SCAMs): Science and the Politics of Doubt |url=http://sciencepolicy.colorado.edu/students/envs_5720/freudenberg_etal_2008.pdf |url-status=live |journal=Sociological Inquiry |volume=78 |pages=2–38 |doi=10.1111/j.1475-682X.2008.00219.x |archive-url=https://web.archive.org/web/20201126214329/http://sciencepolicy.colorado.edu/students/envs_5720/freudenberg_etal_2008.pdf |archive-date=November 26, 2020 |access-date=April 12, 2020 |doi-access=free}}</ref> Examples of issues that have involved the politicization of science include the [[global warming controversy]], [[health effects of pesticides]], and [[health effects of tobacco]].<ref name="Freudenberg 2008" /><ref name="van Der Linden2017">{{cite journal |last1=van der Linden |first1=Sander |last2=Leiserowitz |first2=Anthony |last3=Rosenthal |first3=Seth |last4=Maibach |first4=Edward |year=2017 |title=Inoculating the Public against Misinformation about Climate Change |url=https://www.repository.cam.ac.uk/bitstream/1810/270860/1/global%20challenges.pdf |url-status=live |journal=Global Challenges |volume=1 |issue=2 |page=1 |doi=10.1002/gch2.201600008 |pmc=6607159 |pmid=31565263 |bibcode=2017GloCh...100008V |archive-url=https://web.archive.org/web/20200404185312/https://www.repository.cam.ac.uk/bitstream/handle/1810/270860/global%20challenges.pdf?sequence=1 |archive-date=April 4, 2020 |access-date=August 25, 2019}}</ref>

== See also ==
* [[Criticism of science]]
* [[List of scientific occupations]]
* [[List of years in science]]

== Notes ==
{{notelist}}

==References==
{{Reflist}}

==External links==
{{wiktionary|science}}
{{Philosophy of science}}
{{Glossaries of science and engineering}}
{{Science and technology studies}}
{{Subject bar|auto=1|portal1=Science}}

[[Category:Science| ]]
[[Category:Observation]]
[[Category:Main topic articles]]