Clark Spencer Larsen is the Distinguished Professor of Social and Behavioral Sciences and Chair of the Department of Anthropology at Ohio State University in Columbus, Ohio. His research is primarily focussed on biocultural adaptation in the last 10,000 years of human evolution, with particular emphasis on the history of health, well-being, and lifestyle. He collaborates internationally in the study of ancient skeletons in order to track health changes since the late Paleolithic. He is the author of 200 scientific articles and has authored or edited 30 books and monographs.