“It’s not just about 100 years from now; it’s going to take significant periods of time for that carbon dioxide to make its way back into the Earth’s crust,” said Larisa DeSantis, a paleontologist at Vanderbilt University. “It’s not a short-term event. We’re really committing ourselves to many thousands of years of a warmer world if we don’t take action quickly.”

The study was published in Paleoceanography and Paleoclimatology, a journal of the American Geophysical Union.

This article originally appeared on USA TODAY: Carbon dioxide in our atmosphere may soar to levels not seen in 56 million years

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