I'm an Associate Professor in the Department of Psychology at Arizona State University, co-Director of The Human Generosity Project, and also co-Director of the Cooperation Science Network. I study cooperation across systems from human sharing to cancer. I'm also the chair of the Zombie Apocalypse Medicine Meeting; host of the science podcast, Zombified, and author of the new book from Princeton University Press, The Cheating Cell: How evolution helps us understand and treat cancer. I am a regular contributor to Scientific American, Slate Magazine and The Conversation.