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Expert-reviewed information about the Earth.  For everyone.

    • Virus Featured Article Virus Virus

      A virus is a microscopic organism that can replicate only inside the cells of a host organism. Most viruses are so tiny they are only observable with at least a conventional... More »

    • Earth's atmosphere Featured Article Earth's atmosphere Earth's atmosphere

      The Earth's atmosphere is an envelope of gas that surrounds the Earth and extends from the Earth's surface out thousands of kilometres, becoming increasingly thinner (less dense)... 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 »

    • Refugia Featured Article Refugia Refugia

      Refugia (singular Refugium) are geographical locations where natural environmental conditions have remained relatively constant or stable during times of great environmental... More »

    • 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 »

    • European otter Featured Article European otter European otter

      The European otter (Lutra lutra) is a broadly distributed marine mammal found in both marine and freshwater systems over considerable portions of Europe, Asia and North Africa;... 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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