Narrator: This is Science Today. A new report by researchers at the University of California, Berkeley, has concluded that the use of ethanol from corn as a gasoline additive will do more harm than good to the environment. Geoengineering professor Tad Patzek, who led the study, says that using ethanol as a gasoline additive is like burning the same amount of fuel twice to drive a car once.
Patzek: You burn as much fossil fuel to obtain ethanol as you then can get from burning it for the second time, and therefore to the extent that a car burns ethanol from corn, you actually double the emissions.Narrator: Patzek's findings come at a critical time in the United States. An energy bill has been passed that will double the amount of ethanol to be used as a gas additive to 5 billion gallons a year by 2012.
Narrator: For Science Today, I'm Larissa Branin.