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 ...

For years, gardeners and farmers have relied on one of the world's most abundant resources to make fertilizer: animal poop. Animal manure is generally free and easy to obtain, either from your own ...

An $80 million facility that transforms manure from about 20,000 cows into clean water and organic fertilizer is now operating in Northwest Indiana.