The XPrize Foundation today announced the winners of its four-year, $100 million competition in carbon removal. The winner of the grand prize was Mati Carbon, a startup focused on rock weathering. This method involves spreading crushed basalt onto farms, which improves soil quality and removes CO2 from the air.
Instead of literally capturing and sequestering carbon dioxide, they're using it to help farmers, with the bulk of their operations being moving rocks around in trucks.
https://spectrum.ieee.org/xprize-carbon-removal
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Does rock weathering hold promise for the future of carbon removal? And do you think it will actually make a difference?
But how much carbon does the rock crushing and moving put into the atmosphere?