Manure, trash and wastewater: U.S. utilities get dirty in climate fight
Joey Airoso has always been proud of his cows, whose milk goes into the butter sold by national dairy company Land O'Lakes. Now he has something new to brag about: the vast amounts of gas produced by his 2,900-head herd is powering truck fleets, homes and factories across the state of California.
"It's pretty incredible if you think about it," Airoso said during a recent tour of his 1,500-acre farm, as a stream of watered-down manure flowed from cow sheds into a nearby pit. There the slurry releases methane that is captured and eventually piped into fueling stations and buildings.
By Nichola Groom, Reuters