Dr. Keith Paustian is a Professor in the Department of Soil and Crop Sciences and Senior Research Scientist at the Natural Resource Ecology Laboratory at Colorado State University. He received his BSc and MSc at Colorado State University, and a PhD in Systems Ecology and Agricultural Ecology at the Swedish University of Agricultural Sciences. A major focus of his work involves modeling and field measurement of greenhouse gas emissions from land use activities. Research activities include developing methodology for assessing greenhouse gas and environmental footprints for biofuel feedstock production, inventory methods for agricultural emission sources, used in the US national greenhouse gas inventory; development of web-based tools for estimating on-farm greenhouse gas emissions, energy use and carbon sequestration, used by USDA; and developing methods for estimating greenhouse gas inventories in developing countries. Professional service includes acting as Coordinating Lead Author for the Intergovernmental Panel on Climate Change (IPCC) 2006 National Greenhouse Gas Inventory Methods and the 2003 IPCC Good Practice Guidance for Land Use, Land Use Change and Forestry GHG inventories, service on 2010 National Academy of Science panel evaluating greenhouse gas measurement methods and verification issues. He served on the Verified Carbon Standard (VCS) Steering Committee for Agriculture, Forestry and Other Land Use (AFOLU) and the Soil Science Society of America Greenhouse Gas Working Group.