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 ...

More than a decade ago, California helped spark a boom in biofuels — produced from plants or animal waste — with its first-of-its-kind Low Carbon Fuel Standard. The program forces carbon-intensive ...

Scientists have found that most biochar fed to cattle survives digestion and returns in manure, where it may help store carbon in soil.

BAKERSFIELD, Calif. — At a massive dairy farm in the San Joaquin Valley, nearly 14,000 Holstein cows crane their necks through feeding stalls and gnaw leisurely on alfalfa. Meanwhile, close to their ...

Manure is often used as fertilizer, but what if it could pick up a second application before heading to the fields? A dairy farm in New England is experimenting with turning tons of cow manure into ...

California is America’s dairy capital, with more than 1.7 million cows producing about $10 billion worth of milk last year — but these cows and other livestock in California also produced the ...