Original broadcast date: March 4, 2016. What makes an idea, a brand, or a behavior catch fire? This hour, TED speakers explore the mysteries behind the many things we spread: laughter and sadness, imagination, viruses and viral ideas. Guests include neuroscientist Sophie Scott, entrepreneur Seth Godin, philanthropist Bill Gates, social scientist Nicholas Christakis, and historian Yuval Harari.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy
