Health and Science

Stats and facts about personal health, nutrition, fitness, disease, mortality, health insurance, H1N1, drug and alcohol use, and more

Learn about meteorology; climate; weather disasters, including hurricanes, tornadoes, and lightning; extreme temperatures and precipitation, and more

A primer on the universe, astronomical measurements, details about the solar system, and NASA

Details, slideshows, and timelines about space exploration

Aviation records, Amelia Earhart's legacy, famous aircraft, the Wright brothers, milestones in aviation

Science & Inventions
Cloning, interactive periodic table, the chemical elements, table of geological periods, timeline of famous inventions

Weights & Measures
Conversion calculator, the metric system, U.S. customary system, currency converter, cooking measurement equivalents, sports measurements

Math & Money
Primer on cardinal, ordinal, and nominal numbers, formulas, square roots, powers, numeric operations, U.S. currency, facts about money

Computer & Internet
Recommended video games, info on game ratings, statistics on computer and internet use, data on cell phone use, and more

Environment & Nature
Information about air pollutants, global warming, the greenhouse effect, world and U.S. energy consumption, oil reserves, animals, plants, and endangered species

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Encyclopedia: Health | Science
Search the entire Columbia Encyclopedia for more topics.

Conversion Calculator

Conversion Calculator: Convert length/distance, area, time, volume, and more

Periodic Table of the Elements

Astronomical Calendar: Sun, moon, and stars
Today's Weather Fact: A lot of snow, even for Buffalo

Year by Year
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Archives: FEATURE | QUIZ

Profiles of the Columbia Astronauts
Profiles of the Columbia Astronauts
Awards for digital packet switching to soft contact lenses