Agriculture is responsible for more than 10% of global carbon emissions, according to the U.S. Environmental Protection Agency. But while agriculture is a massive carbon offender, it could now be part of a solution, as startups are trying new ways of using nature to save itself. Startups like Lithos, UNDO Carbon and California-based Eion are experimenting with several types of carbon-absorbing rocks that can accomplish what lime does while permanently removing carbon from the atmosphere at the same time. "We apply a rock dust onto farms, and that helps farmers condition the soil or make the soil better for improvements," said Anastasia Pavlovic, CEO of Eion. "Then over time, that manages to secure and sequester carbon, permanently removing it from the atmosphere."

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Persons: Anastasia Pavlovic, Eion, " Pavlovic, Dan Prevost, Prevost, Elon, Pavlovic, Lisa Rizzolo Organizations: U.S . Environmental Protection Agency, Farmers, Eion, Midwest, CNBC Locations: California, Norway, Mississippi, Illinois