Warm Ocean Accelerating Antarctic Ice Loss

Summer ice loss in parts of Antarctica is at its highest in 1,000 years, according to a new study which finds that the melt is coming largely from underneath ice shelves, the floating edges of the ice sheet that extend over the ocean.

The study is the first comprehensive survey of all the Antarctic ice shelves, which are the 1.5 million square kilometers that fringe much of the frozen continent. 

Lead author Eric Rignot, a professor at the University of California, Irvine, says ice …

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