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HowStuffWorks Science has explanations and colorful illustrations related to earth science, life science, and other wonders of the physical world.

wiseGEEK: clear answers for common questions

Weather articles and news cover the science of meteorology and the atmosphere. Learn the causes of hurricanes, tornadoes, floods, droughts, and ozone layer depletion. Plus, you can learn about weather stations and weather map symbols. Lesson plans fo...

Online Dictionary - Multiple dictionaries including: English dictionary, medical dictionary, legal dictionary, financial dictionary, computer dictionary, thesaurus, dictionary of acronyms and abbreviations, dictionary of idioms, thesaurus, Columbia e...

The Science Company

WikiAnswers: Questions and Answers from the Community

National Geographic Education brings geography, social studies and science to life. Using real-world examples and National Geographic's rich media, educators, families, and students learn about the world and the people in it.

Infoplease.com, a free, authoritative, and respected reference for Internet users, provides a comprehensive encyclopedia, almanac, atlas, dictionary, and thesaurus. Infoplease.com contains facts on all subjects including sports, entertainment, techno...

The largest and most trusted free online thesaurus. Quickly find accurate and up-to-date synonyms, antonyms, and related words at Thesaurus.com. Synonym dictionary, antonym dictionary, words synonyms.

Definition of word from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games.

Dictionary.com - the largest and most trusted free online dictionary. Instantly look up accurate and extensive definitions and word meanings, and hear audio pronunciations.

A Regional Center working with NCDC (National Climatic Data Center) to provide realtime and historical climate data and products.