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.

Three Sheets to the Wind: TMSIDK Episode 23

John Moe (The Hilarious World of Depression) is our special guest co-host, with Maggie Ryan Sandford (science writer, researcher and producer) as our real-time fact-checker. TMSIDK is in Minneapolis for a show exploring the environment, morning drinking, skyways, hidden figures and more.

Getting There: TMSIDK Episode 21

Che "Rhymefest" Smith, Ginger Evans and Mary Catherine Curran are panelists. The rapper/political organizer, the commissioner of Chicago's Department of Aviation and the comedian join us in the City of Big Shoulders for a show on transitions — from here to there, from low to high and from fish to humans. Jesse Dukes is fact-checker.

Family Matters: TMSIDK Episode 20

Amy Chua, Liza Donnelly and Gary Gulman are panelists. The "Tiger Mom," the New Yorker cartoonist and the comedian join our dysfunctional family for this show on parenting, cousins, genealogy and medical divorce. AJ Jacobs is fact-checker.

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.

Rivalry: TMSIDK Episode 17

We kick-off the third season of Tell Me Something I Don't Know with a show on competition of all kinds: athletic, sexual, geopolitical, and the little-known battle between butter and margarine that landed in the Supreme Court.

Sneak Peek of TMSIDK Season 3

Season 3 of Tell Me Something I Don’t Know is coming to your ears! Prepare yourself for 10 shiny new episodes — full of fresh knowledge — starting June 4.

Music: TMSIDK Episode 16

Danny Goldberg, Faith Salie and David Hajdu are panelists. The record executive, the comedian/journalist and the music critic face the music, including industrial instruments, female composers and the all-important bridge. Our real-time fact-checker is Dan Zanes, accompanied by his live band.

Collections: TMSIDK Episode 10

We've gathered amazing and surprising facts from the world of Collections. We're not talking baseball cards and Beanie Babies—we've got: glucose, gamma rays, brainwaves, fake art and some very blue Russian.