Senior Scientist Emeritus, SETI Institute (advisory)

Inductee, NASA Ames Hall of Fame

Chief, NASA ARC, Life Sciences Division (1984 - 91)

Chief, NASA ARC, Extraterrestrial Research Division (1976 - 84)

Chief, NASA ARC Biotechnology Division (1970-76), Assistant/Acting Chief (1965-70)

Chief, NASA JSC Environmental Physiology Branch (1963-65)

Medical Officer, Royal Air Force Institute of Aviation Medicine (1956 - 63)

Vice Chair, SETI Institute Board of Trustees

M.A., B.M., B.Ch. (equivalent to M.D. in the U.S.), Oxford University

B.A. and M.A. in Physiology, Oxford University