3 questions that reveal if a green idea will actually work | Patricia Stathatou | TEDxAtlanta

Who thinks that gassing up your car with corn ethanol is better for the environment than gasoline. Come on, show me your hands. Any ethanol supporters here.I mean, it's made from corn, so it should be better, right. Well, here's the catch. When you factor in the environmental cost of converting land to grow all that corn, ethanol can actually generate 25% more carbon emissions than gasoline.Turning more lands into cornfields has side effects. Like clearing forests, disrupting soils, and using tons of fertil ...