Chyba departs CISAC after five years as co-director

After five years as CISAC's co-director, Christopher F. Chyba left Stanford University to become the co-director of the Program on Science and Global Security and a professor of astrophysical sciences and international affairs at the Woodrow Wilson School at Princeton University.

"We thank Chris for his superb leadership and look forward to continued collaboration with him on biological security and nuclear nonproliferation," said Scott D. Sagan, who served as co-director with Chyba and now directs the center. Chyba accepted an appointment as a CISAC affiliate.

At Stanford, Chyba was also an associate professor in the Department of Geological and Environmental Sciences, and he held the Carl Sagan Chair for the Study of Life in the Universe at the SETI Institute in Mountain View, Calif.

Committed to providing policy-relevant research on international security from both social science and science perspectives, CISAC is traditionally co-directed by a social scientist and a scientist or engineer. The center is conducting a worldwide search for a scholar with scientific expertise to join Sagan, a political science professor, in leading its research, teaching and policy advising programs.