ESD Assistant Professor Mort David Webster has been named Principal Investigator of a $750,000 grant from the National Science Foundation's (NSF) Human and Social Dynamics Program. The grant's other investigators are Henry D. Jacoby, Co-Director of the MIT Joint Program on the Science and Policy of Global Climate Change; Karen Fisher-Vanden and Chris Forest of Penn State University; and David Popp of Syracuse University and the National Bureau of Economic Research. Titled "Collaborative Research: An Improved Model of Endogenous Technical Change Considering Uncertain R&D Returns and Uncertain Climate Response," the three-year research project to be undertaken by Professor Webster and his colleagues will counter previous models used in climate change studies that fail to take into account critical uncertainties, particularly in regard to the research and development of improved energy technologies.