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

Encyclopedia of Earth Welcome to the Encyclopedia of Earth, an electronic reference about the Earth, its natural environments, and their interaction with society. The Encyclopedia is a free, fully sea ...

Protecting Nature, Preserving Life

Computer Glossary, Computer Terms – Technology Definitions and Cheat Sheets from Whatis.com – The Tech Dictionary and IT Encyclopedia

National Geographic Environment Home Page.

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.

Leader in certified carbon offsets; join over 600000 individuals & 1800 businesses fighting climate change. Carbon offsets for indiv/business/products » Carbon Offsets » Calculator » Carbon Neutral.

A global, trade-linked analysis on National Carbon Footprints associated with a consumption activity, a product, a region or a nation.

Explore the updated online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of articles, biographies, videos, images, and web sites.

Ever wondered how much ?nature? your lifestyle requires? You?re about to find out. The Ecological Footprint Quiz estimates the amount of land and ocean area required to sustain your consumption patterns and absorb your wastes on an annual...