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deepmind.google·6d ago
AI Engineering
MIT Technology Review·Jul 2·5 min read
Why California’s carbon manure math doesn’t add up
TL;DR
California's carbon offset program incentivizes dairy farmers to convert methane from manure into natural gas, but research shows it may overstate actual emissions reductions. The program allows fuel producers to buy credits from farmers instead of directly reducing their own emissions.
✦ Why It Matters
Engineers and researchers should critically evaluate incentive-based climate strategies for their real-world effectiveness in reducing emissions.
Key Takeaways
- Support policies that require direct emissions cuts across all industries.
- Educate stakeholders on the limitations of carbon offset programs.
- Encourage investment in technologies that reduce both methane and carbon emissions.
- Advocate for transparent reporting of actual emissions reductions.
How It Works
Dairy farmers use anaerobic digesters to capture methane from manure, converting it into natural gas. This gas can then be sold for LCFS credits, allowing petroleum companies to meet regulatory requirements without directly reducing their own emissions.
âš The Catch
The program's carbon math overestimates the benefits of methane reduction by not accounting for the long-term impact of increased carbon dioxide emissions.