Tell Me Something I Don’t Know!

Tell Me Something I Don’t Know is live journalism wrapped in a game-show package and hosted by Stephen J. Dubner, co-author of the Freakonomics books and host of Freakonomics Radio. Stephen has always had a mission: to tell you the things you thought you knew but didn’t; and things you never thought you wanted to know, but do. Now, he has a new way of doing just that. TMSIDK is still journalism, still factual — but disguised in the most entertaining, unexpected, and occasionally ridiculous conversation you’re likely to hear.

Guests presenters come on stage before a live audience and try to wow Stephen and his co-host(s) with a fascinating fact, a historical wrinkle, a new line of research — anything, really, as long as it’s interesting, useful and true (or at least true-ish). There’s a real-time human fact-checker on hand to sort fact from fiction.

Farming Without Sun or Soil and Eating Manna From Heaven: TMSIDK Episode 35

This week, we work on our survival skills: in the desert, on the tundra, and growing food in abandoned warehouses. Actress Sas Goldberg is co-host; A.J. Jacobs (author of It’s All Relative) is live 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.

All About Bugs (of the Animal and Computer Varieties): TMSIDK Episode 32

Musical crickets, crop-saving wasps — and why you should pre-bug your software. John McWhorter is co-host; the live fact-checker is Bari Weiss.

School Start Times, Brand Names, and Too Much Ground Beef: TMSIDK Episode 31

We filled this episode with insights about the true value of ground beef, sleeping in, company names, and more. Alex Wagner (CBS This Morning Saturday, The Atlantic) is our special guest co-host, with AJ Jacobs (author of It's All Relative) as real-time fact-checker.

How to Count to Infinity: TMSIDK Episode 30

Mary Roach (author of Stiff, Spook, Bonk, Gulp, and Grunt) is our special guest co-host, with AJ Jacobs (author of It's All Relative) as real-time fact-checker. If the promise of tractor beams doesn't pull you in, our guests also explore robotic fish, counting to infinity, and more.

The Perfect Potato Chip, the Origin of Seltzer, and Why We Eat “Beef” and Not “Cow”: TMSIDK Episode 29

Alex Guarnaschelli (Iron Chef America and Chopped) is our special guest co-host, with Sean Rameswaram (Radiolab Presents: More Perfect) as real-time fact-checker. Tell Me Something I Don't Know explores the origins of food words, children's menus, and seltzer.

You Say “eye-RACK,” I Say “ear-ROCK”: TMSIDK Episode 28

Hari Kondabolu (comedian and host of Politically ReActive) is our special guest co-host, with Sean Rameswaram (Radiolab Presents: More Perfect) as real-time fact-checker. Tell Me Something I Don't Know reaches into our “grab bag” for fascinating facts on the downside of keeping secrets, the origin of fantasy sports, what pronunciations say about our politics, and more.

Womb to Tomb: TMSIDK Episode 27

Alexandra Petri (Washington Post columnist) is our special guest co-host, with AJ Jacobs (author of It's All Relative) as real-time fact-checker. TMSIDK covers everything from birth to earth, including pregnancy tests, parenting, monogamy, aging better, and, finally, embalming.

Sneak Peek of TMSIDK Season 4

Alex Guarnaschelli, Alexandra Petri, Hari Kondabolu, Mary Roach, and Jemele Hill are some of the brilliant co-hosts joining us during Season 4. Here's a sneak peek of what you'll learn in 10 new episodes beginning September 17th.