YOUR ALL-ELECTRIC CAR MAY NOT BE SO GREEN

YOUR ALL-ELECTRIC CAR MAY NOT BE SO GREEN

WASHINGTON (AP) -- 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, worsening global warming.

Ethanol isn't so green, either.

"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 key is where the source of the electricity all-electric cars. If it comes from coal, the electric cars produce 3.6 times more soot and smog deaths than gas, because of the pollution made in generating the electricity, according to the study that is published Monday by the Proceedings of the National Academy of Sciences. They also are significantly worse at heat-trapping carbon dioxide that worsens global warming, it found.

...The study finds all-electric vehicles cause 86 percent more deaths from air pollution than do cars powered by regular gasoline. Coal produces 39 percent of the country's electricity, according to the Department of Energy.

....But ethanol isn't, with 80 percent more air pollution mortality, according to the study.

"If we're using ethanol for environmental benefits, for air quality and climate change, we're going down the wrong path," Hill said.