In September 2013, the article “Biofuel expansion, fertilizer use and GHG emissions: unintended consequences of mitigation policies” by Amani Elobeid and Miguel Carriquiry of the Center for Agricultural and Rural Development (CARD) at Iowa State University, Iowa (United States), Kranti Mulik of the Union of Concerned Scientists, Washington, D.C., Jacinto F. Fabiosa of the Agency for International Development, Washington, D.C., Dermot J. Hayes and Bruce A. Babcock, from the Department of Economics at Iowa State University; Jerome Dumortier, from the School of Public and Environmental Affairs at Indiana University–Purdue University Indianapolis, Indianapolis (United States); and Dr. Juan Francisco Rosas, from the Center for Economic Research and a professor in the School of Administration and Social Sciences.