Selected projects under our Bioenergy Research efforts include technology validation and emissions assessments for first and second generation biofuels and their agricultural feedstocks. Using advanced modeling we quantify tailpipe emissions from different ethanol-gasoline blends for local markets as well as internationally. We quantify greenhouse gas reductions from biofuels use in vehicles by employing the latest life cycle greenhouse gas models such as the Argonne National Laboratory GREET model. On the feedstock side our research group documents efficient farming technologies and we model the impact of conservation management practices on life cycle emissions of biofuels. Using diverse remote sensing tools we assess land use change and research the statistical error associated with different land use classification methodologies. Our research has been presented around the global including India, China, South Korea, and Mexico.