Business Green: The US is on track to miss its target of using 36bn gallons of biofuel a year by 2022, according to new research from the Department of Energy (DoE) presented at this week’s climate change conference in Copenhagen. The study was undertaken by the DoE’s Office of Policy and International Affairs and was designed to assess the extent to which the target of consuming 36bn gallons of bioethanol equivalent a year by 2022, set out in the 2007 Energy Independence and Security Act, could be …