A rapidly disappearing section of the West Antarctic Ice Sheet appears to be on an unstoppable path to complete meltdown. The glaciers contain enough ice to raise global sea level by 4 feet. Credit: ... more 
A rapidly disappearing section of the West Antarctic Ice Sheet appears to be on an unstoppable path to complete meltdown. The glaciers contain enough ice to raise global sea level by 4 feet. Credit: NASA Jet Propulsion Laboratory. less 
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Tue, May 13, 2014 3:14 PM EDT