is currently directing the NBER/Sloan Science Engineering Workforce Project (with Daniel Goroff), and an LSE research program on the effects of the Internet on labor markets, social behavior, and the economy.

ALICE P. GAST [NAE] is the Robert T. Haslam Professor in the Department of Chemical Engineering, and the vice president for research and associate provost of the Massachusetts Institute of Technology. Until 2001, she was a professor of chemical engineering at Stanford University, professor of the Stanford Synchrotron Radiation Laboratory and professor, by courtesy, of chemistry at Stanford. She earned her BS in chemical engineering at the University of Southern California in 1980 and her PhD in Chemical Engineering from Princeton University in 1984. She spent a postdoctoral year on a NATO fellowship at the Ecole Superieure de Physique et de Chimie Industrielles in Paris. She was on the faculty at Stanford from 1985 to 2001. She returned to Paris for a sabbatical as a John Simon Guggenheim Memorial Foundation Fellow in 1991 and to Munich as a Humboldt Fellow in 1999. The aim of her research is to understand the behavior of complex fluids through a combination of colloid science, polymer physics, and statistical mechanics. In 1992, Dr. Gast received the National Academy of Sciences Award for Initiative in Research and the Colburn Award of the American Institute of Chemical Engineers. She was the 1995 Langmuir Lecturer for the American Chemical Society. She is a member of the American Academy of Arts and Sciences and the National Academy of Engineering. She served as a member and then as the cochair of the National Research Council Board on Chemical Sciences and Technology and currently serves on the Division on Earth and Life Studies Committee. She also serves on the Homeland Security Science and Technology Advisory Committee.

JOEL MOSES [NAE] is an Institute Professor, professor of computer science and engineering, and professor of engineering systems at MIT. His prior positions at MIT have included provost, dean of engineering, head of the Department of Electrical Engineering and Computer Science (EECS), and associate director of the Laboratory for Computer Science. He led the development of the Macsyma system for algebraic formula manipulation and is the codeveloper of the knowledge-based systems concept in artificial intelligence. His current research focuses on architecture, complexity, and flexibility of large-scale engineering systems. He is a member of the National Academy of Engineering and a fellow of the American Academy of Arts and Sciences, the American Association for the Advancement of Sciences, and IEEE. He was also a member of the National Research Council’s Committee on Research Directions for Information Technology and Committee on Human Resources for Information Technology.