New York Times: Five years ago, rural America was giddy for ethanol. Backed by government subsidies and mandates, hundreds of ethanol plants rose among the golden fields of the Corn Belt, bringing jobs and business to small towns, providing farmers with a new market for their crops and generating billions of dollars in revenue for the producers of this corn-based fuel blend. Those days of promise and prosperity are vanishing. Nearly 10 percent of the nations ethanol plants have stopped production over the past...