Cow manure solids are separated before going into the biodigester at Fiscalini Farms in Modesto, Calif., in 2015.
Cow manure solids are separated before going into the biodigester at Fiscalini Farms in Modesto, Calif., in 2015. Andy Alfaro Modesto Bee file
Cow manure solids are separated before going into the biodigester at Fiscalini Farms in Modesto, Calif., in 2015. Andy Alfaro Modesto Bee file