Member, SETI Institute Board of Trustees (2003-present)
President, American Philosophical Society (2005-present)
Nobel Prize in Physiology or Medicine (1976)
Senior Advisor to the President, Fox Chase Cancer Center (2002-present)
Pennsylvania and University Professor of Medicine and Anthropology at the University of Pennsylvania, Philadelphia (1977-present)
Director, NASA Astrobiology Institute (1999-2002)
Senior Advisor to the Administrator of NASA (2000-2001)
Master Balliol College, Oxford University (1989 to 1994)
Associate Director for Clinical Research, Fox Chase Cancer Center (1964-1989)
National Institutes of Health (1957 to 1964)
Member of the National Academy of Sciences
National Inventors Hall of Fame (1993)
M.D. Columbia University
Ph.D. in Biochemistry, Oxford University