MIT Technology Review Research
7/2/2026

Why California’s carbon manure math doesn’t add up
Short summary
California's methane-reduction subsidy pays dairy farmers to convert cattle waste into natural gas. MIT Technology Review questions whether the program's climate benefit calculations hold up.
- •State incentivizes dairy farmers to capture and sell manure methane as energy
- •Program aims to cut emissions while creating economic incentive for farmers
- •Article examines flaws in the policy's environmental impact assumptions
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