BS Carnegie Tech, 1955
Ph.D. Univ. Birmingham, England 1958
Professor of Physics, Carnegie Mellon Univ. 1958-1982,
Professor of Physics, Univ. Cal. Santa Barbara, 1982-2005
Director, Institute for Theoretical Physics, UCSB 1989-1995
President, American Physical Society 2000
Vice President, National Academy of Sciences, 2001-2005