Midwestern leaders want to sell ethanol in summer despite smog risks salon.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from salon.com Daily Mail and Mail on Sunday newspapers.
Biofuels have long been held up as a viable high-tech climate solution, but in practice they’ve often not lived up to their promise, causing environmental harm and in some cases being more carbon-intensive than fossil fuels.