Companies around the world are spreading crushed rocks on farms to remove carbon dioxide from the atmosphere in a process called enhanced weathering, but the hard part is measuring how much is stored.
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All you need to remove a lot of carbon dioxide from the atmosphere is an open field and piles of crushed-up rock. That is the promise of what may become one of the primary ways to durably remove billions of tonnes of CO₂ from the atmosphere, helping the world reach net zero on time and avoid the most dangerous effects of climate change.