In a new study in The Proceedings of the National Academy of Sciences University of Minnesota researchers report in various scenarios that vehicles using alternative fuels are often more harmful to human health than are conventional gasoline-powered automobiles. From the abstract: We find that powering vehicles with corn ethanol or with coal-based or “grid average” electricity increases monetized environmental health impacts by 80% or more relative to using conventional gasoline. PNAS The AP reported: "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...