Roger Cooke joined Resources for the Future in September 2005 as the first appointee to the Chauncey Starr Chair in Risk Analysis. His research has widely influenced risk assessment methodology, particularly in the areas of expert judgment and uncertainty analysis. He is recognized as one of the world's leading authorities on mathematical modeling of risk and uncertainty. His recent research has encompassed health risks from oil fires in Kuwait following the first Gulf War, chemical weapons disposal, nuclear risk, nitrogen oxide emissions, and microbiological risk. His current research interests include structured expert judgment methodologies and uncertainty analysis, and his work focuses on the implementation of uncertainty analysis in policy-related decisionmaking.