Tumble Science Podcast for Kids

Latest Episodes:

Mailbag: What Happens When Galaxies Crash? Oct 02, 2026

Show notes

In this mailbag episode, astronomer Karen Masters joins Marshall and Lindsay to answer a listener's question: what happens when Andromeda crashes into the Milky Way? Plus, we're launching a brand-new segment: The Kid Quiz!

Find Tumble Cards on Yoto here.

To get an invite to the next Tumble meetup, as well as receive birthday shout outs and ad free versions of the show, go to patreon.com/tumblepodcast and support us!

For Tumble t-shirts, visit our store on Dashery: tumblepodcast.dashery.com

And don't forget to keep checking our blog on our website, sciencepodcastforkids.com for NGSS alignment, activities, and more!

Submit your own question and be on our show here!

Why Does Earth Have a Magnetic Field? Sep 25, 2026

Show notes

How did Earth get its magnetic field? And why does it move around? Our listeners have questions about one of Earth’s most mysterious forces. To find out, we go on an archeological expedition in the Middle East, with pioneering paleomagnetist Lisa Tauxe. Lisa has spent decades “hunting” the magnetic field through time, to understand what ancient artifacts can tell us about how the magnetic field has changed. Did you know, magnetic north doesn’t stay in one place – and sometimes it flips? If you feel yourself pulled into this mystery, hit play on this episode!

Join on Patreon to help us continue to make Tumble: patreon.com/tumblepodcast

Shop official Tumble merch: https://tumblepodcast.dashery.com/

Submit a science question: https://www.sciencepodcastforkids.com/contact

Bring Lindsay & Marshall to your school or event: https://www.sciencepodcastforkids.com/school-visits

Mailbag: Do Space Wormholes Exist? Sep 18, 2026

Show notes

In this mailbag episode, Marshall and Lindsay tackle two listener questions — whether space wormholes are real, and what a fly wing and a carrot could possibly have in common under a microscope. Plus, listener reviews and comments from China!

To get an invite to the next Tumble meetup, as well as receive birthday shout outs and ad free versions of the show, go to patreon.com/tumblepodcast and support us!

For Tumble t-shirts, visit our store on Dashery: tumblepodcast.dashery.com

And don't forget to keep checking our blog on our website, sciencepodcastforkids.com for NGSS alignment, activities, and more!

Submit your own question and be on our show here!

Why Do T. Rexes Have Small Arms? Sep 11, 2026

Show notes

Why did T. Rex have such tiny arms? That’s what our listener Nora wants to know. We’re going to find out why the biggest, most powerful predator to ever walk the Earth did it with a teeny tiny set of arms.

Scientists have been coming up with answers for this question for decades — but science is never settled. Paleontologist Elizabeth Steell has walked into the debate with a stunning theory involving giant heads, evolutionary tradeoffs, and some serious math. Will it convince you? Listen and find out!

Join on Patreon to help us continue to make Tumble and be featured on future episodes: patreon.com/tumblepodcast

Shop official Tumble merch: https://tumblepodcast.dashery.com/

Submit a science question: https://www.sciencepodcastforkids.com/contact

Mailbag: Why Does the Left Brain Control the Right Side of Your Body? Are Dinosaurs Reptiles or Birds? Sep 04, 2026

Show notes

In this final mailbag episode of Summer 2026, Marshall and Lindsay address two listener questions, and learn about a surprising twist of evolution. Plus, listener reviews and comments!

To get an invite to the next Tumble meetup, as well as receive birthday shout outs and ad free versions of the show, go to patreon.com/tumblepodcast and support us!

For Tumble t-shirts, visit our store on Dashery: tumblepodcast.dashery.com

And don't forget to keep checking our blog on our website, sciencepodcastforkids.com for NGSS alignment, activities, and more!

Submit your own question and be on our show here!

Tumble Science Podcast for Kids Season 12 Starts September 11! Aug 28, 2026

Show notes

Why do T. Rexes have tiny arms? Can dogs actually talk? Do we remember dreams or nightmares more?

Season 12 of Tumble Science Podcast for Kids drops September 11th — and we're bringing kids' wildest science questions to REAL scientists for the REAL stories behind discovery (plus the jokes and sound design you know we can't resist).

Almost 200 episodes in, and we're just getting started. 🚀

🎧 Want it early + ad-free? Pledge $1+ at patreon.com/tumblepodcast
🌐 More at sciencepodcastforkids.com

Follow/subscribe now so you don't miss episode 1

The Science of Your Favorite Foods [ENCORE] Aug 21, 2026

Show notes

This is a rebroadcast of a favorite episode of Tumble from season 6.

What’s your favorite food? Why does it taste so good? It turns out, what we think is tasty isn’t just a matter of opinion. It’s science! Ecologist and science writer Rob Dunn takes us on a journey back in time, before kitchens, cooking, and even farming! We find out how our ancestors’ tastes shaped our own cravings - and how our experiences lead us to pick our favorites.

Curious to learn more about the science of taste? Listen to our bonus interview episode with Rob Dunn on Patreon! Available for Patrons who support Tumble at the $1/ level or higher! Pledge at patreon.com/tumblepodcast.

We have free resources to learn more about taste and our ancient ancestors on the blog on our website, sciencepodcastforkids.com.

Mailbag: How Do Stem Cells Decide What to Become? What's Morse Code? Aug 07, 2026

Show notes

In this special summer mailbag episode, Marshall and Lindsay help answer three kid questions:

How do stem cells decide what to become?
How do chameleons change color? and...
What is Morse code?

This special episode features answers from Jessica Whited, Michel Milinkovich, and Mick Sullivan, from The Past and the Curious! As well as a roundup of listener reviews, and more!

For more information about Tumble, go visit our website at sciencepodcastforkids.com. To send us a question and get it answered on our show, go to https://tumble.science/Question.

Also support us on Patreon! patreon.com/tumblepodcast

The Secret to Cheetah's Super Speed [Encore] Jul 24, 2026

Show notes

How do cheetahs get their super speed? We talk to a cheetah scientist to find out why a spotted cat is the fastest animal on Earth. Cheetahs are literally built for speed! Anne Hilborn spent months scoping out cheetahs on the hunt in the grasslands of the Serengeti. We’ll discover how cheetahs’ incredible speed is linked to their survival - and what they do when being fast isn’t enough. On our special bonus interview episode - available to our Patreon supporters - Anne shares the amazing story of how being photographed while dropping cheetah poop on herself became both her most embarrassing and her proudest moment. Photos on the blog! Pledge at patreon.com/tumblepodcast. Only $1/month gets you double the Tumble, and $5/month comes with a shoutout on the show, a birthday greeting, and opportunities to be on the show! Want to learn more about cheetah science, and reputable conservation organizations? Check out our blog at

⁠www.sciencepodcastforkids.com

The Plastic Pollution Patrol [ENCORE] Jul 10, 2026

Show notes

This is a rebroadcast of one of our favorite episodes from last season, and one that is particularly timely for the summer!

What if you found out that there was a tiny, nearly invisible type of plastic pollution that’s found nearly everywhere… but you’d never heard of it! That’s what happened to environmental scientist Jace Tunnell several years ago, and he’s been on a great nurdle hunt ever since! This episode on fighting plastic waste comes with a special bonus: the opportunity to enroll in a “Nurdle Patrol” and lead the Nurdle search in your community!

Join the Nurdle Patrol Special Agent Training Course at ⁠sciencepodcastforkids.com/nurdles⁠

If you want to support Tumble on Patreon, just go to patreon.com/tumblepodcast. Ad-free early access to episodes is just $1/month, and for just $5/month you can get a birthday shout out on our feed!

T-shirts and other merch (including merch specific to this episode) are available at the Tumble merch store, at tumblepodcast.dashery.com.