An equipment operator steps off a coal pile after reclaiming coal with a Stacker Reclaimer at the Sherco power plant in Becker, Minn. The share of U.S. electricity that comes from coal has fallen to its lowest level since World War II. Utilities are aggressively ditching coal in favor of natural gas, which has become cheaper and produces far fewer emissions of toxic chemicals and gases that contribute to climate change.
Photo by Associated Press /Chattanooga Times Free Press .
published Tuesday, June 12th, 2012