Dr. Ken Olson received his BS degree in 1969 from the University of Wisconsin-LaCrosse with majors in Chemistry and Biology, and MS and PhD in Physiology from in Michigan State University in 1970 and 1972. He was assistant professor at Rutgers University from 1973 to 1975 and from 1975 to present at Indiana University School of Medicine, South Bend where he is currently Professor Emeritus and at the University of Notre Dame where he is currently Adjunct Professor; Department of Biological Sciences, and Concurrent Professor; Department of Chemical Engineering. For many years his research focus was in comparative cardiovascular physiology and endocrine regulation of fluid volume. Over the past 10 years his research has shifted to hydrogen sulfide (H2S) as an endogenous signaling system. During this time he developed the hypothesis that H2S metabolism is a key oxygen-sensing mechanism that couples PO2 to hypoxic responses in the vasculature and chemoreceptor cells in all vertebrates, and he continues to work in this area. His work has been supported since 1975 from the National Science Foundation and he has authored over 175 research articles, reviews, and book chapters.