The Greenland ice sheet is melting. Global temperatures are increasing. Sea level is rising. We've known this for awhile. So what's news? It's the pace of these changes.
From 1900 to 2010, the ice sheet lost over 9 gigatons of ice. But in a short recent period, the melt has been accelerating even more swiftly. It's outpaced every prediction. From 2003 to 2010 (in just seven years), the ice sheet dropped mass at more than twice the rate it did during the entire 20th century.
