Researchers at NASA and the University of California say the west Antarctic ice sheet is melting faster than predicted. The thaw could trigger a rise in sea levels by up to 12 feet over hundreds of ... more 
Researchers at NASA and the University of California say the west Antarctic ice sheet is melting faster than predicted. The thaw could trigger a rise in sea levels by up to 12 feet over hundreds of years. Charlie Rose reports. less 
1 / 30
CBSTV Videos
Tue, May 13, 2014 8:36 AM EDT