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.

Wannabes: TMSIDK Episode 15

Tim Harford, Carla Hayden and Rahmein Mostafavi are panelists. The "Undercover Economist," the Librarian of Congress and the comedian join TMSIDK in Washington, D.C. — the city that wants to be a state — to learn about wannabes, from international spies to new human organs. Femi Oke is fact-checker.

Oh, My God: TMSIDK Episode 14

John Fugelsang, Tami Sagher and Aman Ali are panelists. Who better to help us talk through religion than these three comedians? We look into unholy fruit, religion in banking and the politics of reincarnation. A.J. Jacobs is fact-checker.

Stupid Stuff: TMSIDK Episode 12

This episode of Tell Me Something I Don't Know is all about "Stupid Stuff" — things that seem stupid but aren't and things don't but are.

Under the Hood: TMSIDK Episode 11

This week, we go "Under the Hood," unearthing the secrets behind concealed ovulation, kosher food, cheesy dreams, pneumatic felines and negotiating.

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.

Wordz: TMSIDK Episode 9

This episode of Tell Me Something I Don't Know is all about the written — or spoken, or programmed, or texted — word. Let's start with the letter "A": abbreviations, absenteeism, AI, advertisements and ...a rising tide.

Athletes’ Feats: TMSIDK Episode 8

For our sports-themed episode, we left out all the tired cliches and instead jammed it full of odd trophies, hidden advantages, surprising innovations and... Trouble with a capital T.

Perfection: TMSIDK Episode 7

In 1921, Congress considered a bill that would add a 13th month called Vern. The goal was to create a year with 13 identical months of exactly four weeks (28 days). We would have a perfectly fixed calendar — every date of every month would fall on the exact same day of the week. Always. […]

Fool Me Once: TMSIDK Episode 6

Hannibal Buress, Annie Duke and Fr. James Martin, S.J. are panelists. A comedian, a poker player and a priest walk into a bar… and have to deal with missing hands, missing bodies and missing scientific evidence. Fact-checker: Sean Rameswaram, podcast producer for WNYC Studios.