Will Poop Power Electric Cars? Sure Will At Denver Zoo
Green Car Reports
MARCH 30, 2012
Denver Zoo realised the In terms of renewable energy, you have to give credit to the first person who thought of using excrement as a source of fuel. At the risk of dragging things down to gutter-level, one place you'll find one heck of a lot of excrement is at a zoo. You don't need us to tell you that big animals produce large amounts of waste.