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Study: Your All-Electric Car May Not Be So Green

People who own all-electric cars where coal generates the power may think they are helping the environment. But a new study finds their vehicles actually make the air dirtier...

"It's kind of hard to beat gasoline" for public and environmental health, said study co-author Julian Marshall, an engineering professor at the University of Minnesota. "A lot of the technologies that we think of as being clean ... are not better than gasoline."

The study examines environmental costs for cars' entire life cycle, including where power comes from and the environmental effects of building batteries.

The study finds all-electric vehicles cause 86 percent more deaths from air pollution than do cars powered by regular gasoline.