Clean Air Champ Challenges Motor City Maven

Michigan Congressman John Dingell has long looked out for Detroit’s carmakers on Capitol Hill fighting fuel efficiency and tailpipe emissions standards. But now Dingell faces a challenge from one of the greenest Democrats  ? California’s Henry Waxman – who wants to knock Dingell from his perch atop one of Washington’s most powerful committees. Living on Earth’s Jeff Young tells us what it means for the environment.