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In China, a marsh grass called Spartina alterniflora was introduced in...
Taking an Ice Sample
Using a drill, a team removes a chunk from the thick Arctic ice. Small samples are...
Mon, 01/10/2011 - 11:55
Oil in the Ocean
In summer 2009, in the heart of New Orleans, a 600-foot tanker collided with a...
Fri, 06/11/2010 - 17:30