Athena Aktipis is a cooperation theorist, cancer biologist and social psychologist who studies cooperation across systems from human sharing to the evolution of multicellularity and cancer. She is an Assistant Professor in the Department of Psychology, co-Director of The Human Generosity Project, co-leader of the Arizona Cancer Evolution Center and a member of the Center for Evolution and Medicine and the Biodesign Center for Immunotherapy, Vaccines, and Virotherapy at Arizona State University. She is the author of Evolution in the Flesh and The Cheating Cell: How Evolution Helps Us Understand and Treat Cancer.