John R. Ehrenfeld, who before his retirement was affiliated with the MIT Center for Technology, Policy, and Industrial Development and the Departments of Chemical Engineering and Civil and Environmental Engineering, now serves as executive director of the International Society for Industrial Ecology and is senior research scholar at the Yale School of Forestry and Environmental Studies. In 1999 he became the first recipient of a Lifetime Achievement Award from the World Resources Institute. He lives in Lexington, MA.
