Bachelor of Science, University of Illinois, 1962; Doctor of Science, Massachusetts Institute of Technology, 1966.
Postdoctoral fellow, Harvard University School Public Health, Boston, 1967-1968;
from assistant professor to professor microbiology, Massachusetts Institute of Technology, Cambridge, Massachusetts, 1968-1988;
professor, Massachusetts Institute of Technology, Cambridge, since 1988;
professor applied microbiology, Massachusetts Institute of Technology, Cambridge, 1977-1988. Director Bioinformation Association, Boston, since 1981. Member doctoral examination committee, Department Biology, Massachusetts Institute of Technology, since 1969, undergraduate writing requirement coordinator, since 1989, summer courseBiotechnology: Principles and Processes, since 1983;member Committee on Toxic Chemicals, Massachusetts Institute of Technology, 1990-1993, chairman BPEC Annual Symposium, since 1987.
Member of advisory board Center Biotechnology Engineering Northeastern U., since 1990, National Research Council's Associateship Program Review Panel, since 1988, National Science Foundation/France Joint Biotechnology Panel, since 1987, National Science Foundation Biotechnology Review Panel, since 1986.
Member American Academy Microbiology, American Society Microbiology, Canada Society Microbiology, Institute Food Technologists, American Chemical Society, Society for Industrial Microbiology.
Married ChoKyun Rha, August 26, 1969.