Chapter 3 discussed the history and impressive growth of the U.S. ethanol industry, as well as its dependence on corn for feedstock and government subsidies. It was also noted that a shift away from corn-based ethanol is highly desirable for environmental and other reasons. A new concern arises from indications that the rapidly expanding use of corn for ethanol may be greatly increasing corn prices, thereby harming poor people in the U.S. and overseas (Runge and Seanuer 2007).