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birdsoftheworld.org favicon

Discover detailed profiles for every bird species

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Explore detailed accounts, maps, and multimedia for every bird species worldwide. Learn, discover, and connect with global bird science and conservation.

antcat.org favicon

Browse the world’s ant species in one place

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Explore a comprehensive online catalog of ant species worldwide, with detailed taxonomy, references, and tools for researchers and enthusiasts.

marinespecies.org favicon

Discover marine species and their classifications

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Explore a comprehensive online encyclopedia of marine species, featuring scientific names, classifications, and resources for marine research worldwide.

planetmath.org favicon

Explore and contribute to a collaborative math encyclopedia

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

jewfaq.org favicon

Learn about Judaism in clear, simple language

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Explore an easy-to-read online encyclopedia about Judaism, including beliefs, holidays, customs, and history for all knowledge levels.

historylink.org favicon

Discover Washington State’s rich history online

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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.

ncpedia.org favicon

Explore North Carolina’s history and culture online

26%

NCpedia is an online encyclopedia about North Carolina, offering articles, primary sources, and resources for students, educators, and researchers.

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.

blackpast.org favicon

Explore Black history from around the world

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Discover Black history worldwide with BlackPast.org, an online encyclopedia offering articles, resources, and educator tools on African heritage.

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.

feedipedia.org favicon

Explore animal feed resources and recommendations

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Feedipedia is an online encyclopedia offering detailed, reference-based information and recommendations on animal feeds for farmers and researchers.

seismosoc.org favicon

Join a global earthquake science community

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Connect with earthquake science professionals, access research journals, and join events dedicated to advancing seismology worldwide.

psychologicalscience.org favicon

Connect with leading psychological science events

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Explore research, events, and resources from the Association for Psychological Science, a global nonprofit advancing scientific psychology worldwide.

seti.org favicon

Explore the search for life beyond Earth

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The SETI Institute brings together scientists and space enthusiasts to explore the universe, share discoveries, and ask if we are alone in space.

physiology.org favicon

Join a global network advancing physiology research

23%

Connect with scientists and educators to explore physiology research, share discoveries, and support health science through the American Physiological Society.

bioinformatics.org favicon

Connect with the global bioinformatics community

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Join an open bioinformatics community focused on sharing research, open access resources, and free software for computational biology and life sciences.

eatcs.org favicon

Explore research, awards, and conferences in TCS

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Connect with the European Association for Theoretical Computer Science for research news, awards, conferences, and resources in theoretical computer science.

ascb.org favicon

Connect with global cell biology experts

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ASCB connects cell biologists worldwide, offering events, publications, and resources to support research, networking, and professional growth in cell biology.

unavco.org favicon

Access interactive Earth science data and tools

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Explore geoscience data, interactive tools, and educational resources focused on measuring Earth changes, GNSS, and geophysical research. English language.

entsoc.org favicon

Join a global network of insect science experts

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Connect with entomologists worldwide, access insect science resources, join events, and stay updated on research in the Entomological Society of America.

asabe.org favicon

Join a global network of agri-biological engineers

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Connect with agricultural and biological engineers, access resources, and explore sustainable technology for food, energy, and the environment.

euro-fusion.org favicon

Explore Europe’s fusion energy research hub

22%

EUROfusion brings together scientists and industry to advance fusion energy research, offering news, resources, and education on fusion in Europe.

mrs.org favicon

Join a vibrant community for materials scientists

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Connect with the global materials science community, access research resources, and join events to advance your career and knowledge in the field.

carta.anthropogeny.org favicon

Discover human origins through research and events

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Explore research, events, and resources on human origins and evolution with the Center for Academic Research and Training in Anthropogeny (CARTA).

ashg.org favicon

Join a global genetics research community

22%

Connect with genetics professionals, access research, and explore events and resources in human genetics and genomics on this global community site.

acs.org favicon

Connect with chemistry experts and resources

21%

Connect with chemistry professionals, access research, find career resources, and explore educational opportunities with the American Chemical Society.

apsnet.org favicon

Join a global plant pathology community

21%

Connect with plant pathology experts, access research, resources, and events, and advance your career through the American Phytopathological Society.

sigchi.org favicon

Join the global Human-Computer Interaction community

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SIGCHI connects students and professionals worldwide who are interested in research, education, and practical applications of Human-Computer Interaction.

asm.org favicon

Join the world’s largest microbiology community

21%

Connect with microbiology professionals, access research, join events, and explore resources for scientists and educators at the American Society for Microbiology.

ametsoc.org favicon

Join a global community for weather and climate science

21%

Connects weather, water, and climate professionals with resources, events, and a supportive community focused on advancing atmospheric science.

Worldwide Science.org Alternatives

animaldiversity.ummz.umich.edu favicon

Discover facts about animals worldwide

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Explore detailed information, images, and facts about animal species from around the world on this educational online encyclopedia for all ages.

embryo.asu.edu favicon

Discover the science of embryos and development

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Explore detailed articles about embryos, development, and reproduction in this educational encyclopedia from Arizona State University.

iep.utm.edu favicon

Read expert-written philosophy articles online

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Explore philosophy topics with in-depth articles written by professional philosophers. A free online encyclopedia for students, teachers, and curious minds.

mathworld.wolfram.com favicon

Discover 13,000+ illustrated math explanations

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Explore thousands of detailed math topics in this comprehensive, easy-to-use online encyclopedia, complete with illustrations and interactive examples.

biografiasyvidas.com favicon

Explora miles de biografías en español

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Spanish-language site with biographies of notable people from history and today, offering detailed profiles, life stories, and achievements.

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.

spartacus-educational.com favicon

Dive into rich, linked history encyclopedias free

26%

Explore free, detailed history encyclopedias with narratives, illustrations, and primary sources—perfect for students, teachers, and history enthusiasts.

japanknowledge.com favicon

Search 1,900+ Japanese dictionaries and encyclopedias

26%

Access over 1,900 Japanese dictionaries and encyclopedias online for easy, comprehensive research. Create your own digital library in Japanese.

kids.britannica.com favicon

Safe, age-appropriate encyclopedia for kids

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Britannica Kids offers a safe online encyclopedia with fact-checked, age-appropriate articles, images, and videos to help kids learn and do homework.

ancient.eu favicon

Discover world history with verified facts

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Explore fact-checked articles, images, and maps about world history in this free online encyclopedia, run by a nonprofit for learners everywhere.

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