John Pepper has a Ph.D. in Biology from the University of Michigan He is a former SFI postdoc and a current member of the SFI External Research faculty. He has used ABM models to study ecology and evolutionary theory, as well as problems in biomedicine. He specializes in evolutionary theory and its applications His current professional application is to the problem of the evolution of normal body cells into cancer cells. He is a biologist in the National Cancer Institute, Division of Cancer Biology. He uses the tools of computational and systems biology to better understand the biological processes underlying cancer and to design better interventions for cancer prevention.