Clean NewsEnvironmentNewsRenewable EnergyMaking Renewable Natural Gas From Pig PooRoshanDecember 4, 2018December 3, 2018 by RoshanDecember 4, 2018December 3, 201804Smithfield Foods is the largest hog farmer in the United States, slaughtering more than 114,000 of the animals every day. All those hogs create an...
