What is the secret to happiness? It’s a question people have been asking for ages. Scholars at UC Berkeley are launching a massive open online course to help answer that question. It's called "The Science of Happiness," and it's starting on Sept. 9. 82,000 students have already signed up. Lead instructor Emiliana Simon-Thomas joins Vicky Nguyen in studio to discuss the course. Aired on Aug. 30, 2014.