Expert-reviewed information about the Earth. For everyone.
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Featured Article
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 »
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Featured Article
Douglas-fir
The Douglas-fir (scientific name: Pseudotsuga) is a genus of tree that includes ar least five species found in North America and... More »
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Featured Article
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 »
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Featured Video
Jean-Michel Cousteau: use of oil dispersants...
The Rundown caught up with ocean explorer and occasional PBS host Jean-Michel Cousteau to chat about what his team discovered on dives in the aftermath of the Deepwater Horizon... More »
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Featured Article
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 »
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Featured Article
West Nile Virus
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 »
Rooftop runoff contamination
Last Updated on 2013-05-25 at 19:49
[The lead author of this article is Dennis Lye]
Rooftop runoff contamination is receiving increasing attention as environmental and health issues, particularly as human... More »
Niger River
Last Updated on 2013-05-25 at 17:50
The Niger River is the third largest river in Africa, and the fourteenth longest river in the world. Rising in the Guinea Highlands, the river flows 4,200 kilometres through... More »
Northwestern thorn scrub forests
Last Updated on 2013-05-25 at 15:23
The Northwestern thorn scrub forests ecoregion represents a large expanse of degraded dry forest surrounding the Thar Desert. Neither exceptionally species-rich nor high in... More »
Pakistan
Last Updated on 2013-05-25 at 15:06
Pakistan is a nation of one hundred and ninety million people (mid-2013 est.) in southern Asia, bordering the Arabian Sea, between India on the east and Iran and Afghanistan on... More »
Sulu Archipelago rainforests
Last Updated on 2013-05-25 at 14:29
Although these islands represent transitional stepping stones from the island of Borneo to Mindanao in the Philippines, they have evolved their own distinctive faunas. The Sulu... More »
Turkish Straits
Last Updated on 2013-05-24 at 13:41
The Bosporus and Dardanelles are the Turkish Straits and divide Asia from Europe.
The Bosporus is a 17-mile long waterway that connects the Black Sea with the... More »
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