Ray Brewer, 66, duped investors out of nearly $9 million claiming he could turn cow manure into green energy. He was sentenced to over six years in federal prison for the Ponzi scheme.

The farm uses a diary digester to capture methane from cow manure which generates energy in an effort to reduce greenhouse gas emissions. (Noah Berger/AP Photo) Dairy and digester capital. Home to ...

Converting cow manure to fuel is growing climate solution, ... Home to about 1.7 million cows, California is the country's leading dairy producer and a large contributor of methane.

Mr. Brewer, who pleaded guilty to fraud charges in February, spent the money on a 3,700-square-foot custom home in California, a 12-acre plot of land in Montana and new Dodge Ram pickup trucks ...