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Greg Osmond
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amazing !
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Documentation on the Seine barges in the 17th century is scant, but apparently m...

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Expert-reviewed information about the Earth.  For everyone.

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      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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      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 »

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

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        Panama is a nation of three-and-a-half million people, located between Costa Rica to the north and Columbia to the south. Panama connects the continental land... More »

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Hainan Island monsoon rainforests Last Updated on 2013-05-21 at 20:13 Hainan Island, located in the South China Sea, supports extensive monsoon forest in its seasonally dry interior. Many endemic taxa have evolved here, and forest types resemble... More »
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