Revenge often feels sweet, but what price do we pay for seeking it out? Researcher James Kimmel, Jr. proposes a radical theory: our desire for vengeance operates like an addiction in the brain. This week, how “revenge addiction” plays out in our everyday lives — and on a global scale. 

Hidden Brain is about to go on tour! Join us as Shankar shares seven key insights he's learned from the show over the past decade. To see if we're coming to your city, and to purchase tickets, go to hiddenbrain.org/tour.