Archeologist David Hazzard, right, and Thomas Klatka work on a gravesite being claimed by the sea on the north end of Tangier Island, Va. on Wednesday, April 3, 2013. The island and portions of the Virginia coast along Chesapeake Bay are especially vulnerable to climate change because of glaciers thousands of years ago that gouged out the 200-mile bay and a meteor that slammed into the lower bay 35 million years ago like an exclamation point. (AP Photo/Steve Helber)
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