Science
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BugGuide
A volunteer-run identification community and photo atlas for insects and spiders of North America, hosted by Iowa State…
BUGS!
A handmade small-web shrine to bugs and insects, with zines, a gif garden, collages, fanlistings and a playlist of bug-t…
Building Rome in a Day
A University of Washington research project that rebuilt landmarks like the Colosseum in 3D from over a million Flickr p…
Bumble Bee Watch
A community science project from the Xerces Society where people photograph and identify bumble bees, with a species gui…
Butterflies and Moths of North America
A collaborative sightings database mapping butterfly and moth species across North America, contributed by naturalists a…
Caffeinspiration
A personal blog about tech, our minds and how things work, with posts that explore the details behind systems and ideas.
Caffenol
Recipes and experiments for developing photographic film with instant coffee, washing soda and vitamin C - plus beer, wi…
Calamities of Nature
A webcomic about science, religion, philosophy, and bacon, with a deep archive of strips that poke fun at physicists, ph…
Calculus for Beginners and Artists
A free MIT online textbook that teaches calculus gently from numbers and spreadsheets up to derivatives, integrals and d…
Calculus Made Easy
An HTML edition of Silvanus P. Thompson's 1910 classic introduction to calculus, laid out chapter by chapter for reading…
Calling Bullshit
A free university course on data reasoning, with full syllabus, recorded lectures, tools and case studies teaching you t…
Cambridge Digital Library
Cambridge University Library's digital collections, with high-resolution scans of treasures like Isaac Newton's papers,…
Canadian Museum of Nature Science Blog
A science blog from the Canadian Museum of Nature, whose researchers care for 14.6 million specimens and write about fos…
Canadian Space Agency
The official site of Canada's space agency, covering its astronaut corps, robotics contributions, and satellite and scie…
Cancer Currents
The National Cancer Institute's research blog, with news and updates on cancer studies, treatments, and prevention, writ…
Cancer FactFinder
An interactive Harvard site that fact-checks what actually does and does not cause cancer, sorting everyday exposures an…
Carbon Brief
A UK-based site covering climate science and energy policy with data-driven articles, in-depth explainers, and interacti…
Casebooks
Cambridge's digital edition of the casebooks of Simon Forman and Richard Napier, 17th-century astrologer-physicians, wit…
Cat Fansite
A cute fan site devoted to cats, with pages on cat care, how coat colours, dilution and white spotting are inherited, ca…
CelesTrak
Dr. T.S. Kelso's long-running reference site providing orbital element data and technical resources for satellite tracki…
Centauri Dreams
A scientifically rigorous blog exploring interstellar travel concepts, exoplanet research, and the long-term future of d…
Center for Humans and Nature
A nonprofit that publishes essays, poems and the Minding Nature journal exploring how people relate to the living world,…
Center for Inquiry
A nonprofit promoting science, reason, and secular values through articles and campaigns that challenge pseudoscience an…
Century of Flight
An encyclopedic reference tracing the entire 20th century of aviation history, from the Wright brothers to the jet age.
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