Tumble Science Podcast for Kids

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!

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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!

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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 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. 🚀

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🌐 More at sciencepodcastforkids.com

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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.

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