PerspectiveATMOSPHERE

What Drives the Ice Age Cycle?

Science  28 Jul 2006:
Vol. 313, Issue 5786, pp. 455-456
DOI: 10.1126/science.1131297

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Summary

Between 3 and 1 million years ago, ice ages followed a 41,000-year cycle. Two studies provide new explanations for this periodicity.