William D’Andrea, right, and Yongsong Huang took cores from two lakes in Greenland to reconstruct 5,600 years of climate history near the Norse Western Settlement. Credit: William D’Andrea/Brown University

June 3, 2011 By

William D'Andrea, right, and Yongsong Huang took cores from two lakes in Greenland to reconstruct 5,600 years of climate history near the Norse Western Settlement. Credit: William D'Andrea/Brown University

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