News From the Field
Rising Carbon Dioxide Levels at End of Last Ice Age Not Tied to Pacific Ocean, As Had Been Suspected
October 3, 2011
After the last ice age peaked about 18,000 years ago, levels of atmospheric carbon dioxide CO2 rose about 30 percent. Scientists believe that the additional CO2--a heat-trapping greenhouse gas--played a key role in warming the planet and melting the continental ice sheets. They have long hypothesized that the source of the gas was the deep ocean.
University of Michigan
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