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Thursday, October 28, 2010 |
Thursday, October 28, 2010 |
Photo: Pollution Prevalent in U.S. West's National ParksThe findings revealed that some of Earth's most pristine wilderness is still within reach of the toxic byproducts of the industrial age. Map courtesy WACAP, 2008
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ADVERTISEMENTNATIONAL GEOGRAPHIC'S PHOTO OF THE DAY |
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