Alex meets a scientist who has built a tool meant to do the impossible -- measure the world's overall happiness and sadness. Plus, Alex volunteers for a risky and strange experiment. Learn more about your ad choices. Visit podcastchoices.com/adchoices
Alex meets a scientist who has built a tool meant to do the impossible -- measure the world's overall happiness and sadness. Plus, Alex volunteers for a risky and strange experiment. Learn more about your ad choices. Visit podcastchoices.com/adchoices
