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Press Release 13-142

Antarctic ice core sheds new light on how the last ice age ended

Changes in Earth's orbit appear to be key to Antarctic warming

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Brian Bencivengo, of the National Ice Core Laboratory, hold a segment of the WAIS ice core.

Brian Bencivengo, assistant curator of the National Ice Core Laboratory, in Lakewood, Colo., holds a one-meter-long section of the West Antarctic Ice Sheet (WAIS) Divide Ice Core.

Credit: Geoffrey Hargreaves, National Science Foundation

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