<p>Adding crushed volcanic rock to farmland can pull carbon dioxide out of the air. In a field test, UC Davis scientists found that the process works even in dry climates. </p>
A major factor in removing carbon from the atmosphere could be the addition of crushed volcanic rock to crops. Through a field study, researchers from Cornell University and the University of California, Davis discovered that this method retained carbon in the soil even when California was experiencing a severe drought.
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