A California dairy has converted a pair of 18-wheelers to run on biomethane produced from cow manure, creating what is believed to be the nation's first cow-pie–powered trucks. Hilarides Dairy will ...

PIXLEY, Calif. (AP) — 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 ...

MERCED, Calif. (KFSN) -- It's a smelly situation. A Merced dairy is converting cow waste into renewable energy. Eileen Martinho works for Maas Energy Works and tells us how it's done. "This is a dairy ...

HARTFORD — A bill passed by the General Assembly last week allows farmers to use cow manure and food waste to produce electricity. Called an anaerobic digester, the waste is fed into a large metal ...

Let down by electric utilities, farmers bet on natural gas as a more promising way to make a return from cow manure. This story is the second in a three-part series. Read the first and third ...

This can be sold off as a product, or used directly to run specially tailored engines. The solid remainder of the waste is used as fertilizer. Cow manure is washed out as a slurry, and kept in covered ...

Technician Blake Iske looks out over farmland adjacent to the Marshall Ridge Renewable Energy Center in State Center on Sept. 18. The facility’s three anaerobic manure digesters extract methane from ...