Spreading crushed rock on farmland could pull carbon dioxide from the air. The minerals react with the gas and trap it as stable carbonate. Field trials are testing the scale and reliability of the effect.
Speed up geology
The idea accelerates nature. Weathering that takes eons is hastened by grinding rock. Reactions quicken.
Farmland as a sink
Fields do double duty. Basalt dust can boost crops while capturing carbon. Co-benefits appear.
Measurable removal
Verification is key. Researchers track how much carbon is truly locked away. Accounting is hard.
Large potential
Scale could matter. Estimates suggest a meaningful climate contribution. Uncertainty is wide.
Practical hurdles
Logistics loom. Mining, grinding, and spreading carry costs and emissions. Net benefit must be proven.
Active testing
Trials expand. Companies and scientists run field experiments. Data are accumulating.
The bottom line
Enhanced rock weathering spreads crushed minerals to trap carbon dioxide as carbonate. Farmland offers co-benefits, but measurement and logistics are hard. Field trials are testing its promise.
