CHAMPAIGN, Ill. — Just over a year ago, the U.S. ethanol industry was still in overdrive, fueling a wave of new factories to keep pace with surging demand for the corn-based gasoline additive.
But the boom has since stalled amid a deep economic downturn that has stifled demand, one of many threats to the fledgling industry that were forecast in a 2007 study by two University of Illinois researchers.