By: Andrea Thompson, OurAmazingPlanet Managing Editor
Published: 03/06/2013 12:49 PM EST on LiveScience
Buried beneath the rocks, dirt, buildings ...
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By: Douglas Main, OurAmazingPlanet Staff Writer
Published: 06/29/2012 03:29 PM EDT on OurAmazingPlanetA study of Greenland's rocks may have turned u...
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