NPR Science
Originally published on Wed May 23, 2012 7:50 am

Photo by Ian Joughin / Science/AAAS
Researchers studying Greenland's ice say it is melting more slowlyl than previously thought. Here, ice travels down a relatively small outlet glacier into the sea.

Photo by Ian Joughin / Science/AAAS
Massive sections of ice (center front) have broken away from the Jakobshavn glacier into the sea. There's enough water stored in Greenland's glaciers to raise the sea level by 20 feet.
A new study has some reassuring news about how fast Greenland's glaciers are melting away.
Greenland's glaciers hold enough water to raise sea level by 20 feet, and they are melting as the planet warms, so there's a lot at stake.
A few years ago, the Jakobshavn glacier in Greenland really caught people's attention. In short order, this slow-moving stream of ice suddenly doubled its speed. It started dumping a whole lot more ice into the Atlantic. Other glaciers also sped up.
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