Behavior Change (Ultra Egghead Edition): TMSIDK Episode 24

Angela Duckworth (psychologist and author of Grit) is our special guest co-host, with Mike Maughan (head of global insights at Qualtrics) as real-time fact-checker. TMSIDK is in Philadelphia with a cornucopia of the world's most renowned behavior change experts presenting original research.

Cities: TMSIDK Episode 19

Eugene Mirman, Ed Glaeser and Amy Glasmeier are panelists. The comedian, the Harvard economist and the MIT professor join us in one of America's oldest urban centers for a show about cities, including ruins, sewage and ghost towns. Mike Maughan is our fact-checker.