Biogas made from dairy and pig manure has long been an energy source non grata for environmental groups across the country.

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 ...

Groups focusing on the environment and small farms are praising a decision by the U.S. Department of Agriculture to pause and ...

The state took a first small step toward requiring that dairies and livestock operations reduce their emissions of the ...

Add Yahoo as a preferred source to see more of our stories on Google. One of California’s biggest sources of methane pollution — its massive dairy industry — operates almost entirely without ...

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 to counter the ...