Freakonomics Radio Live: “Jesus Could Have Been a Pigeon.”

Our co-host is Grit author Angela Duckworth, and we learn fascinating, Freakonomical facts from a parade of guests. For instance: what we all get wrong about Darwin; what an iPod has in common with the “hell ant”; and how a “memory athlete” memorizes a deck of cards. Mike Maughan is our real-time fact-checker.

Mind Games: TMSIDK Episode 34

How to make people like you, why you should lick rocks, and what an awkward person is really thinking. Angela Duckworth (Grit author) is co-host; Mike Maughan (Qualtrics) is live fact-checker.

Jon Batiste, Gail Simmons, and Strange Smells: TMSIDK Episode 33

Things we learn this week: dogs aren't so great at sniffing, men aren't so lazy, and New York doesn't smell so bad (anymore). Gail Simmons (Top Chef) is co-host; Jon Batiste plays his melodica for us; the live fact-checker is Mike Maughan.

Urinetown: TMSIDK Episode 26

Tell Me Something I Don't Know is on the weird side of the tracks in Philadelphia with everything you've ever wanted to know about graffiti, cockroaches, tattoos, pee, and more. James Altucher (host of The James Altucher Show) is our special guest co-host, with Mike Maughan (head of global insights at Qualtrics) as real-time fact-checker.

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.