| http://www.w3.org/ns/prov#value | - February 23, 2013 (CNN) ??? ???Two decades of satellite readings back up what dramatic pictures have suggested in recent years: The mile-thick ice sheets that cover Greenland and most of Antarctica are melting at a faster rate in a warming world??? The research released Thursday was backed by the European Union, NASA, the National Science Foundation and research councils in Britain and the Netherl
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