Nature World: University of Wisconsin-Madison researchers said that ancient soils store large amounts of trapped carbon.
The carbon from this soil, which is now being released due to erosion, agriculture and mining could contribute to climate change, researchers said.
"There is a lot of carbon at depths where nobody is measuring," said Erika Marin-Spiotta, a University of Wisconsin-Madison assistant professor of geography and the lead author of the new study. "It was assumed that there was little carbon...