One of California’s biggest sources of methane pollution — its massive dairy industry — operates almost entirely without regulation. In fact, not only do the state’s largest dairies face no penalties ...

A growing number of California dairy farms are reducing their climate impact with methane digesters that capture the heat-trapping gas so it can be used as biofuel. But farming communities worry about ...

A California state grant program designed to reduce greenhouse gas emissions results in the direct release of approximately 225,000 to 300,000 metric tons of carbon dioxide into the air each year, ...

The California Air Resources Board (CARB) has conducted yet another in a series of academic analyses verifying the climate benefits of dairy digesters and the minimal impacts to neighboring ...

CORVALLIS - It's not easy running a successful dairy business right in the middle of one of Montana's fastest-growing counties. After all, not everyone appreciates cows or their byproducts. Dan Huls ...

Maas Energy Works dairy digester at Legacy Ranch in Pixley, Calif. First of a two-part series on renewable natural gas in the agricultural sector. Renewable natural gas, or methane from non-fossil ...

A giant, balloon-like tarp stretches over a lagoon of manure on a Central Valley dairy farm, concealing a quiet but remarkable transformation. Methane, a potent climate-warming gas, is being captured ...

Dairy farms produce huge amounts of potent greenhouse gases. But now, scientists say these farms can slash their methane emissions by covering cow-poop ponds with a giant tarp. Scientists recorded an ...

Novilla RNG constructs manure digesters that have the appearance of grain bins to capture methane. This one is south of Sioux Center in Northwest Iowa. (Courtesy of Novilla RNG) Buy Photo The Gazette ...

Dairy cows in northeast Iowa, shown in this 2015 file photo, often produce more manure than cattle raised for beef. A Winneshiek County dairy farm has abandoned its plans to increase the size of its ...