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Tsunamis, giant waves caused by underwater earthquakes, speed across the ocean at...
Fri, 01/14/2011 - 12:16
Gulf Oil Spill
The Gulf oil spill is recognized as the worst oil spill in U.S. history. Within...
About 100 million years ago, during the heyday of the dinosaurs, reefs were built...
Fri, 12/04/2009 - 14:25