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Expert-reviewed information about the Earth.  For everyone.

    • Sulfur Featured Article Sulfur Sulfur

      Sulfur (alternatively spelled sulphur) is the chemical element with  atomic number 16. The chemical symbol S is used in formulae and abbreviations. Sulfur has high abundance... More »

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      Since 1999, more than 30,000 people in the United States have been reported as getting sick with West Nile virus. Infected mosquitoes spread West Nile virus (WNV) that can... More »

    • Nuclear power Featured Article Nuclear power Nuclear power

      Nuclear power is the generation of electricity from controlled reactions within the nucleii of atoms that release energy used to boil water, the steam from which drives a... More »

    • Invasive Plant Abundance Featured Article Invasive Plant Abundance Invasive Plant Abundance

      Home and Away: Are Invasive Plant Species Really That Special? Invasive plants are a major environmental problem--but how abundant are they? Invasive plant species... More »

    • Petrochemicals Featured Article Petrochemicals Petrochemicals

      Petrochemicals are chemical products made from the hydrocarbons present in raw natural gas and petroleum crude oil. The largest petrochemical manufacturing industries are to... More »

    • Dudleya cymosa (Lem.) Britt. & Rose Featured Article Dudleya cymosa (Lem.) Britt. & Rose Dudleya cymosa (Lem.) Britt. & Rose

      Dudleya cymosa (Lem.) Britt. & Rose is a perennial low-growing succulent plant species that is endemic to California. Having a number of subspecies, this fleshy plant is... More »

    • Argon Featured Article Argon Argon

      Argon is a chemical element designated by the symbol Ar. Argon has atomic number 18 and is the third element in group 18 of the periodic table (noble gases). Argon is present... More »

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Suez Canal, Egypt Last Updated on 2013-05-16 at 22:09 The Suez Canal, Egypt (30°42?18?N, 32°20?39?E) is one of the world's most important waterways and its Sumed Pipeline is considered a significant... More »
Singapore Last Updated on 2013-05-16 at 21:21 Singapore is a small island nation with over five million people, separated from the southern tip of Peninsular Malaysia by the Straits of Jabor. It is the focal point for... More »
Strait of Hormuz Last Updated on 2013-05-16 at 13:16   The Strait of Hormuz (26°34'0.00"N,  56°15'0.00"E) a narrow passageway connecting the Persian Gulf with the Arabian Sea and separating... More »
Oil transit chokepoints Last Updated on 2013-05-16 at 12:45 World oil chokepoints for maritime transit of oil are a critical part of global energy security. About half of the world's oil production... More »
Get Involved with the Encyclopedia of Earth Last Updated on 2013-05-16 at 12:19 We are looking for authors who embrace the Encyclopedia of Earth quality standards, and who are willing to work under your real name in a dynamic, collaborative environment. We... More »
Baltic Sea Last Updated on 2013-05-15 at 22:50 The Baltic Sea is situated between Scandinavia and mainland Europe, and extends into the North Sea.  The sea is split into several smaller basins termed the Gulf of... More »
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