blog posts New study from U. of I. found that using corn for biofuel comes with more costs than benefits Jul 5, 2017 10:15 am by WBEZ-FMIllinois in the News Share on Facebook Tweet Email Images WBEZ-FM (June 29) Corn is a main export of Illinois, used for both food, biofuel. In fact, about 40% of U.S.-grown corn is used for biofuel. Share on Facebook Tweet Email