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California Air Officials Nix Polluting Dairy Energy
Milk producers in California are installing digesters to capture and use methane from their cow manure. But air officials in the asthma-plagued San Joaquin Valley say some of the machines release nitrogen oxides, and that’s a no-no.
Some dairy farmers are investing in machines that turn gases from cow poop into usable energy. The technology keeps potent climate change gases out of the atmosphere. But Amy Coombs reports some California farmers are getting into trouble with air pollution officials.