DEAR JOHN: Horse manure and cow manure are similar in nitrogen content when fresh, but when dried, or “aged,” horse manure is richer, so the first thing to consider when deciding between them is the ...

KERN COUNTY, Calif. — Historically one of the most polluting industries in California, dairy farms are stepping up to ambitious methane reduction targets. And the unlikely means to meeting the ...

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 ...

Cow power — manure — seen as part of climate change strategy Capturing methane from manure can reduce pollution and save energy, but technology can be tricky and too expensive to make money.

Hundreds of maize farmers in Trans Nzoia County, Kenya’s food basket, are turning to dry cow dung manure instead of the expensive option — commercial fertilisers — to cut costs. Until recently, most ...

Clearly not all cow muck can be harvested. But if more food waste was collected, and more biogas plants built near dairy farms, "by 2050, we could be looking at 10-15 million households heated with ...