A new study on an ancient ice sheet may hold important clues about our planet's future.
The research focuses on the Laurentide Ice Sheet, the massive expanse covering North America during the last Ice Age, which ended about 10,000 years ago. A team of scientists found that small spikes in the temperature of the ocean — not the air — likely caused periods of rapid melting and splintering of the ice.
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Their findings add to a growing body of evidence that climate change could ultimately drive sea levels even higher than today's models predict, according to the study published Feb. 15 in the journal Nature. Glaciers in Greenland, Antarctica and other areas have been melting rapidly in recent years due in part to increasing ocean temperatures. Read more... More about Cryosphere , Oceans , Climate Change , Global Warming , and Heinrich