Middle schooler, Aanya, has an up-close encounter with a squirrel in the school yard, which leads her to an obsession with one of North America's most common critters. She tells host Lulu Miller all about the overlooked superpowers of squirrels, including one squirrel who lives way up in the Arctic, where the weather gets so cold the squirrels who live there drop their body temperatures down below freezing and somehow, miraculously, survive.

Host Lulu travels to Alaska to meet one of these squirrels as it sleeps, and Lulu talks with biologists Dr. Kelly Drew and Dr. Brian Barnes about why this humble squirrel holds potential for treating Alzheimers, brain injury, and even helping astronauts hibernate on the long journey to Mars.

Check out the making of this episode here! Video by Amy Pearl.

This episode features a song with a cameo from Chicago-based musician Tasha. Check out our songs page for 'On The Other Side (ft. Tasha)' and more new singles every week.

Special thanks to Aanya and her mom Roli for bringing us this story, and to Amy Loeffler, Clara Goulet, Loi Goulet, Ellie Bell and Ferris Jabr, the writer who first made the “pop-squirrel" joke. We came across it in a wonderful article he wrote in Scientific American. Also, check out this Wired article by Brendan I. Koerner for more on arctic ground squirrels.

Terrestrials was created by Lulu Miller with WNYC Studios. This episode was produced by Ana González, Mira Burt-Wintonick, Alan Goffinski, Joe Plourde and Lulu Miller, with help from Tanya Chawla, Sarah Sandback and Valentina Powers. Fact checking by Natalie Middleton. Transcription by Caleb Codding.

Our advisors are Ana Luz Porzecanski, Andy J. Pizza, Anil Lewis, Dominique Shabazz, Liza Demby, Princess Daazhraii Johnson and Tara Welty.

Learn more about storytellers, listen to music, and dig deeper into the stories you hear on Terrestrials with activities you can do at home or in the classroom on our website, Terrestrialspodcast.org.

Badger us on social media: @radiolab and #TerrestrialsPodcast or by emailing us at terrestrials@wnyc.org.

HEY GROWN-UPS!
Love the show? Leave us a ⭐⭐⭐⭐⭐ rating and review on your podcast app—it helps curious listeners find us!

We want to hear from you! Share your thoughts about Terrestrials with us.
Subscribe to our weekly newsletter for bite-sized essays, activities, and ways to connect with the show.
Follow us on YouTube, Instagram, and TikTok for behind-the-scenes extras and more.
Listen to original music from Terrestrials on Spotify, Apple Music, or our music page.

Got a badgering question for the team? Email us at terrestrialspodcast@wnyc.org or submit a voice memo with your name, age, and your question using this form!

Terrestrials is made possible in part by listeners like you. Support the show by joining Radiolab’s membership program, The Lab—and we’ll send you a special thank-you gift from our team!

The Snowball: Extreme Squirrels in the Arctic (Replay)

Terrestrials