Jay Gulledge is a research scientist in the Environmental Sciences Division and Climate Change Science Institute at Oak Ridge National Laboratory. Prior to joining ORNL in November 2012, he directed the science program at the Pew Center on Global Climate Change and its successor, the Center for Climate and Energy Solutions. His academic is research focused on microbial ecology, ecosystem science, and the global carbon cycle. After leaving academe in 2005, Dr. Gulledge turned his attention to the scientific basis for climate and environmental policy, including the characterization of scientific uncertainty to guide decision making and the international security and foreign policy implications of climate change. In 2011 he received the American Geophysical Union’s Charles S. Falkenberg Award.