These images provided by NASA show the extent of surface melt over Greenland’s ice sheet on July 8, left, and July 12, right. Nearly every part of the massive Greenland ice sheet suddenly and strangely melted a bit this month in a freak event that concerned scientists had never witnessed before. NASA says three different satellites saw what it calls unprecedented melting. Associated Press
Read the article: NASA: Strange and sudden massive melt in Greenland
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