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Ralph Tanner, a professor of microbiology at the University of Oklahoma, focuses his research on anaerobes in the environment and putting those bacteria to use in industry.

He develops useful microbial catalysts for biofuel production from sustainable crops and has extended our knowledge of microbial diversity by isolating a number of new genera and species with novel physiologies. He helped define the phylogeny of bacteria.

In this podcast, I talk with Dr. Tanner about his work producing biofuels from burnt plant material, the future of biofuels in the U.S., whether bacterial systematics might be forced to change in light of new research on recombination, and about his approach to teaching microbiology.