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Tsunamis, giant waves caused by underwater earthquakes, speed across the ocean at...
Fri, 01/14/2011 - 12:16
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
The Official Canoe Launch
At a ceremony on the edge of the Potomac River in Washington, D.C., Douglas Chilton...
Tue, 10/27/2009 - 11:27