The brain easily forms ingroups and outgroups – and shows different responses when viewing one or the other. At the extreme, the brain stops seeing outgroup members as people, but more like objects. But are there ways to rehumanize? And in this context, what do heroes look like? In this episode, Eagleman talks with two men -- Maoz Inon and Aziz Abu Sarah -- one Israeli and one Palestinian. The two men, full of pain and sorrow, are fighting. But they are fighting side by side. They are fighting to repair the future. Learn what peacebuilders are, how they function, and what this has to do with the neuroscience of dehumanization, ingroups, outgroups, and the possibilities -- both political and neural -- for rehumanization.