Roy Radner is Leonard N. Stern School Professor of Business at New York University. Prior to joining New York University, he was a Distinguished Member of Technical Staff at AT&T Bell Laboratories, and Professor of Economics and Statistics at the Univ. of Calif., Berkeley. He currently teaches environmental economics and economic theory. His current research interests include strategic analyses of global climate change, and bounded rationality in decision making. He is a member of the National Academy of Sciences of the U.S., a Fellow of the Amer. Acad. of Arts and Sciences, a Distinguished Fellow of the Amer. Assoc. for the Adv. of Sci. and of the Amer. Economic Assoc., and a Past-President of the Econometric Society.