Explore the challenges facing the manure biogas project, including loan delinquencies and environmental concerns.

PIXLEY, Calif. — The stench of cow feces, urine and ammonia forces residents to keep windows and doors closed in parts of California's farming country. Some people constantly run air purifiers at home ...

Maas Energy Works dairy digester at Legacy Ranch in Pixley, Calif. First of a two-part series on renewable natural gas in the agricultural sector. Renewable natural gas, or methane from non-fossil ...

Add Yahoo as a preferred source to see more of our stories on Google. A growing number of California dairy farms are reducing their climate impact with methane digesters that capture the heat-trapping ...

KALAMAZOO COUNTY, MI — Each of the 5,819 dairy cows at VDS Farms in Kalamazoo County produces 60 pounds of manure a day. That adds up to 350,000 pounds of poop a day. And more than 60,000 tons of ...