Uploaded July 2023 | Updated September 2026, 2 weeks ago

---

From the Radiolab podcast: How butts make us human.

This is a story about your butt. It’s a story about how you got your butt, why you have your butt, and how your butt might be one of the most important and essential things for you being you, for being human.

In this episode from 2019, Reporter Heather Radke and Producer Matt Kielty talk to two researchers who followed the butt from our ancient beginnings through millions of years of evolution, all the way to today, out to a valley in Arizona, where our butts are put to the ultimate test.

Episode Segments:
0:00 Intro

🎧 Subscribe to Radiolab wherever you listen to podcasts: bit.ly/3trXDLe
🔎 Subscribe to Radiolab on YouTube: bit.ly/3I9KI53
🖋 Subscribe to Radiolab’s Newsletter: radiolab.org/newsletter
🌱 Check out Radiolab's Starter Kit Playlist: bit.ly/3sX8f4P
👍 Like this video ✏️ and leave us a comment!

Follow Radiolab:
Instagram — instagram.com/radiolab
Twitter — twitter.com/Radiolab
Facebook — facebook.com/Radiolab

Support Radiolab by becoming a member of The Lab today: radiolab.org/the-lab

Guests in this episode include: DANIEL LIEBERMAN, DENNIS BRAMBLE, RON BARRETT, NICK COURY,

Photo illustration Jared Bartman