Lee Alan Dugatkin is a professor and Distinguished University Scholar in the Department of Biology at the University of Louisville. His main area of research is the evolution of social behavior. He is currently studying the evolution of cooperation, aggression, antibiotic resistance, risk-taking behavior, and the interaction between genetic and cultural evolution. Dr. Dugatkin is the author of over 145 articles on evolution and behavior in journals such as Nature and The Proceedings of the National Academy of Sciences and several trade monographs on the evolution of cooperation and the history of science. He is also the author of Principles of Animal Behavior , Second Edition.