Discovery helps explain how Greenland's ice sheet responds to shifting temperatures

A tiny clue found in ancient sediment has unlocked big secrets about Greenland's past and future climate. Northwestern University Professor Yarrow Axford describes how clues found in rare sediment cores indicate that Greenland's climate during the last two interglacial periods experienced extreme warming. This new information will feed into climate and ice sheet models to more accurately forecast future warming and sea level rise.

Provided by Alex P. Taylor/Northwestern University

Runtime: 1:31

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