- Eric Weisstein's World of Science
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Comprehensive online encyclopedias of astronomy, math, physics, scientific biographies, and scientific books, with many equations and formulas.
scienceworld.wolfram.com
- Encyclopedia of Life@
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dir.yahoo.com/.../Biology/Encyclopedia_of_Life
- HowStuffWorks Science
Learn how natural phenomena and technological processes work. Covers topics in engineering, aerospace, biology, earth science, astronomy, and physics.
science.howstuffworks.com
- Extreme Science
Ever wonder what the biggest, baddest, and the best are in the natural world? Check out these world records and meet some of the scientists who are studying this stuff.
www.extremescience.com
- Nature Encyclopedia of Life Sciences
ELS is a reference resource for the biological sciences.
www.els.net
- Scientific Commons
Provides access to scientific publications across disciplinary, institutional, and technological boundaries. From the University of St.Gallen and the Institute for Media and Communications Management.
www.scientificcommons.org
- Botanicus
Explore Botanicus, the web-based encyclopedia of historic botanical literature from the Missouri Botanical Garden Library.
www.botanicus.org
- Yahoo! Kids Science
Science news, informative movies, and dinosaurs.
kids.yahoo.com/science
- The Science Portal
Find selected Wikipedia articles, photographs, and categories addressing the major branches of scientific study: agronomy, astronomy, biology, biotechnology, chemistry, earth science, medicine, physics, and psychology.
en.wikipedia.org/wiki/Portal:Science
- Encyclopedia of Astronomy and Astrophysics
Articles covering cosmology, galaxies, interstellar medium, stars, the solar system, space missions, theoretical concepts, and more. Subscription required.
eaa.iop.org
- GalaxyGoo
Collective of scientists with a mission to present mathematical and chemistry experiments online in a dynamic and interactive way.
www.galaxygoo.org
- Open Questions
Designed to organize scientific information around a number of fundamental open questions, questions that motivate leading edge basic scientific research.
www.openquestions.com
- World Book @ NASA
Index of encyclopedia articles about the Earth's geology and atmosphere, the planets, celestial objects, astronomers, space missions, and other astronomy topics.
www.nasa.gov/worldbook
- Whatiscience.com
An overview of science ranging topics in aerospace, biology, physics, astronomy, and earth science.
www.whatiscience.com
- Science Encyclopedia
Online health and science encyclopedia covering a wide range of scientific and medical concepts and topics. Articles are written in plain language by professional experts.
science.jrank.org
- Smithsonian Photography Initiative@
/Duplicate_URLs/Smithsonian_Photography_Initiative/
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