Columbus Dispatch: The first large ethanol plants to produce biofuel from nonfood sources such as corncobs are starting operations in the Midwest as the industry worries that they might also be the last -- at least in the United States.
After a decade of research and development, the ethanol-maker Poet Inc. and its Dutch partner Royal DSM recently produced the first cellulosic ethanol at a $275 million plant next to a cornfield in this northern Iowa town.
Two other companies are completing new cellulosic ethanol...