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 3.8 / 5 (28) 5

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 4.4 / 5 (24) 4

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 4.5 / 5 (23) 0

Study shows continued spread of 'dead zones'

A global study led by Professor Robert Diaz of the Virginia Institute of Marine Science, College of William and Mary, shows that the number of "dead zones"—areas of seafloor with too little oxygen for most marine life—has ...

Aug 14, 2008 4.1 / 5 (25) 4