| Ph.D., 1983. University of Hawaii, Honolulu, Hawaii. Major: Microbiology
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| M.S., 1979. University of Wisconsin, Oshkosh, Wisconsin. Major: Biology/Microbiology
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| B.S., 1977. University of Wisconsin, Madison, Wisconsin. Major: Bacteriology |
| Editor, Applied and Environmental Microbiology 1999-2004
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| Associate Editor, Symbiosis |
| Co-Organizer of Agricultural Microbe Genomes Conferences (with Stephen Heller et al.). |
| Professor: Department of Soil, Water, and Climate, Biological Process Technology Institute, and Department of Microbiology University of Minnesota, St. Paul, Minnesota 07/96 - present. |
| Associate Professor: Departments of Soil Science and Microbiology University of Minnesota, St. Paul, Minnesota 07/93 - 6/96.
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| Assistant Professor: Departments of Soil Science and Microbiology University of Minnesota, St. Paul, Minnesota 06/89 - 6/93.
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| Microbiologist: U.S. Department of Agriculture-ARS; Beltsville, Maryland, 01/86 - 05/89.
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| Research Molecular Biologist: Allied Corporation; Syracuse, New York, 04/85 - 12/85. |