Member President’s Task Force Air Pollution, 1969-1970, United States/Japan Committee Science Cooperation, 1970-1973. Member visiting committee Jet Propulsion Laboratory, 1968-1972. Member California Government's Earthquake Council, 1972-1980.
Board of directors, president Isotope Foundation. Fellow American Nuclear Society, American Institute Chemists, British Academy (correspondent). Member American Philosophical Society, American Academy Arts and Sciences, National Academy Sciences, Heidelberg Academy Science, American Association for the Advancement of Science, American Physical Society, American Institute Chemical Engineers, American Chemical Society, American Geophysical Union, American Institute Aeronautics an Astronautics, Bolivian Society Anthropology, Berkeley.