 Following his service as Chairman of the Atomic Energy Commission , Seaborg returned to UC Berkeley where he was awarded the position of University Professor . At the time , there had been fewer University Professors at UC Berkeley than Nobel Prize winners . He also served as Chairman of the Lawrence Hall of Science where he became the principal investigator for Great Explorations in Math and Science ( GEMS ) working with director Jacqueline Barber . Seaborg served as at the University of California , Berkeley , from 1958 to 1961 , and served as President of the American Association for the Advancement of Science in 1972 and as President of the American Chemical Society in 1976 . 
