In Episode 27 Dr. Athena Aktipis from the Department of Psychology at the Arizona State University joins us to chat about cooperation from a cellular to human scale. Athena shares with us how the five principles of cooperation can be applied across systems, how cancer represents a breakdown of this multicellular cooperation, and how a need based transfer system is an optimal cooperation and generosity strategy. What is cooperation and can any action be altruistic? Do we need bad people to have cooperation? What can zombies tell us about cooperation and psychology? All this and much more in Cooperation, Cancer, and Conmen with Dr. Athena Aktipis!