Yale Sociologist on Humanity's Innate Instinct For Good

Nicholas Christakis is a physician, sociologist and author who has an important message for us all: even in trying times, humans show an innate instinct for good. It’s a case he makes in his latest book “Blueprint: The Evolutionary Origins of a Good Society." He speaks with Hari about this latest theory. He also explains the importance of social distancing and why it actually works.