OSLO (Reuters) - Boulders as big as soccer balls show that a thinning of West Antarctic glaciers has become 20 times faster in recent decades and may hold clues to future sea level rise, scientists said on Friday.
Rocks trapped in glacier ice start to react like clockwork when exposed to the air because of a bombardment of cosmic rays. Scientists studied boulders by three glaciers to find how long they have been out of the ice and so judge the pace of thinning.
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