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Sea Levels on the Move
Through the use of satellites and land survey tools, scientists are learning about...
Fri, 01/14/2011 - 13:36
Today, carbon dioxide (CO2) levels in our atmosphere are the highest they've been...
About 100 million years ago, during the heyday of the dinosaurs, reefs were built...
Fri, 12/04/2009 - 14:25