Earth - Environment news

Addressing the 'nitrogen cascade'

While human-caused global climate change has long been a concern for environmental scientists and is a well-known public policy issue, the problem of excessive reactive nitrogen in the environment is little-known beyond a ...

May 15, 2008
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Permafrost carbon content double the old estimates

New research indicates that the amount of frozen organic carbon locked away in the world’s permafrost regions – a major potential source of atmospheric carbon dioxide (CO2) and methane (CH4) – is double ...

Sep 12, 2008
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Where does stored nuclear waste go?

Millions of gallons of hazardous waste resulting from the nation’s nuclear weapons program lie in a remote location in southeastern Washington state called Hanford. Beneath this desert landscape about two ...

Nov 27, 2007
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New clues to air circulation in the atmosphere

Air circulates above the Earth in four distinct cells, with two either side of the equator, says new research. The new observational study describes how air rises and falls in the atmosphere above the Earth's surface, creating ...

Aug 21, 2008
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Desert dust feeds tropical rainforest

The Amazon rainforest in South America relies on dust transported by winds from the Sahara desert in North Africa to replenish the nutrients and minerals in its soils. For the first time, scientists have proved ...

Oct 30, 2006
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