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Monday, November 23, 2009 |
Monday, November 23, 2009 |
Photo: Sprawling Angkor Brought Down by Overpopulation, Study SuggestsA new study suggests overexploitation and overpopulation may have helped bring down the mysterious civilization. Photograph by David Alan Harvey/NGS
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ADVERTISEMENTNATIONAL GEOGRAPHIC'S PHOTO OF THE DAY |
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