In order to address global climate change, the U.S. Renewable Fuel Standard (RFS) aims to increase the use of biofuel in order to reduce greenhouse gas emissions. According to a new study by Tyler Lark of UW-Madison and co-authors, including several members of Grassland 2.0, the RFS may have missed the mark in reducing emissions – in fact, the greenhouse gases produced consequentially negate any advantages of corn ethanol over gasoline. Why? The RFS policy makers did not predict the full-scale impacts of the land use change that would result from its implementation – mainly more corn and less pasture.