It’s Bottoms Up For Antarctic Ice Sheets (NPR)

You can think of Antarctica as an amazing layer cake, made from millions of layers of snow that gradually turns to ice. But a new study finds that’s not always the case. Some of the ice in Antarctica is actually forming from underneath the glaciers, instead of being piled on from the top, according to a report published online by Science magazine

http://www.npr.org/2011/03/04/134229249/its-bottoms-up-for-antarctic-ice-sheets

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