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News 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.](/news/mmg/media/images/last_ice_age_f.jpg)
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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