This video explores some of the problems with corn ethanol production and use in fuel. Data was obtained from the following sources: Sandersen, Katharine. US Biofuels: A Field in Ferment. Nature 444. 673-676 (2006). Searchinger et al. Fixing a Critical Climate Accounting Error. Science 326. 527-528 (2009). Khosla, Vinod. Biofuels: Clarifying Assumptions. Science 322. 371-372 (2008). Melilio et al. Indirect Emissions from Biofuels: How Important? Science 326. 1397-1399 (2009). Kwok, Roberta. Cellulosic Ethanol Hits Roadblocks. Nature 461. 582-583 (2009). Plevin, et al. Greenhouse gas emissions from biofuels' indirect land use change are uncertain but may be much greater than previously estimated. Environmental Science and Technology 44(21). 8015-8021 (2010).