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worldhistory.org favicon

Discover world history with free, trusted resources

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Explore fact-checked articles, images, and timelines on world history with this free, non-profit online encyclopedia for learners of all ages.

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Access articles and resources from the American Journal of Psychiatry for research, clinical insights, and mental health education.

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Explore Washington State's history with articles, photos, timelines, and more on this free online encyclopedia dedicated to local stories and events.

nejm.org favicon

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sefaria.org favicon

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Read thousands of Jewish texts online in Hebrew and English, including Torah, Talmud, and commentaries, all freely accessible in one place.

victorianweb.org favicon

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Explore Victorian literature, history, and culture with essays, images, and resources for learning and research on the Victorian Web.

radiopaedia.org favicon

Explore thousands of radiology cases and articles

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Radiopaedia.org is a free, peer-reviewed online encyclopedia for radiology, offering articles, teaching cases, and resources for medical professionals worldwide.

planetmath.org favicon

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PlanetMath.org is a collaboratively written online mathematics encyclopedia and community, helping make math knowledge accessible to everyone.

blackpast.org favicon

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famousscientists.org favicon

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feedipedia.org favicon

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encyclopedie-environnement.org favicon

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anb.org favicon

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artincontext.org favicon

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Art in Context is a holistic art encyclopedia offering articles on art history, famous artists, techniques, architecture, and creative inspiration.

federalreservehistory.org favicon

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palestine-studies.org favicon

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Explore in-depth resources, journals, and digital archives about Palestine's history, culture, and current affairs from the Institute for Palestine Studies.

longdom.org favicon

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Access a wide range of open access journals on clinical, medical, and technology topics. Read, explore, or submit scholarly research from anywhere.

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Britannica Academic offers trusted, up-to-date articles and research tools for college students, educators, and researchers seeking reliable information.

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Explore the ancient Indus Valley Civilization with articles, research, images, and resources about Harappa and South Asian archaeology.

routledge.com favicon

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Explore philosophy topics and thinkers with the Routledge Encyclopedia of Philosophy—an online resource for articles, overviews, and scholarly insights.

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historycentral.com favicon

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biologydictionary.net favicon

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oxfordre.com favicon

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theoi.com favicon

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tacitus.nu favicon

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rah.es favicon

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hls-dhs-dss.ch favicon

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lex.dk favicon

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merriam-webster.com favicon

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Look up word definitions, synonyms, and grammar tips with this trusted online English dictionary. Explore games, quizzes, and new words updated regularly.

biography.com favicon

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Explore detailed biographies, videos, and stories about celebrities, historical icons, and influential people from all walks of life on Biography.com.

historyextra.com favicon

Discover key events from history every day

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Explore thousands of articles, podcasts, and quizzes on British and world history, plus daily highlights of historic events, from HistoryExtra.

sapere.it favicon

Explore Italian encyclopedia and study tools

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Sapere.it is an Italian online encyclopedia with De Agostini content, free dictionaries, a translator, and study tools to help you learn and test yourself.

atomicarchive.com favicon

Discover the story of the atomic bomb in depth

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Explore the history, science, and impact of the atomic bomb with timelines, biographies, maps, treaties, photos, and videos in this educational resource.

webvision.med.utah.edu favicon

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Explore in-depth articles and resources about the retina and visual system, designed for students, researchers, and anyone interested in vision science.

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Explore facts, symbols, maps, and history for all 50 U.S. states, plus quizzes and printable resources to help you learn more about each state.