Bachelor of Science, Iowa State University, 1962; Master of Arts, Columbia University, 1963; Doctor of Philosophy, Columbia University, 1966.
Postdoctoral fellow, Joint Institute Laboratory Astrophysics, Boulder, Colorado, 1966-1968; professor, University of Wisconsin, Madison, 1968-1975; research chemist, Ballistic Research Laboratory, Aberdeen, Maryland., 1975-1979; program manager, Socially Responsible Investment International, Menlo Park, California, 1979-1988; associate laboratory director, Socially Responsible Investment International, Menlo Park, California, since 1988. Consultant Battelle, Columbus, Ohio, 1975-1981, Science Applications International Corporation, La Jolla, California, 1982-1986, National Aeronautics and Space Administration, Washington, since 1984. Visiting professor.Ruhr U., Bochum, Federal Republic of Germany, 1988, U. Paris, Orsay, France, 1989.
(Book by Crosley, David R. (ed).)
Fellow American Physical Society. Member American Association for the Advancement of Science, American Chemical Society, Combustion Institute, American Geophysical Union, Pi Mu Epsilon, Phi Lambda Upsilon, Sigma Chi.
Married Barbara DeVries, September 7, 1963 (divorced 1985). 1 child, Stephen Risdon.