Radiolab is on a curiosity bender. We ask deep questions and use investigative journalism to get the answers. A given episode might whirl you through science, legal history, and into the home of someone halfway across the world. The show is known for innovative sound design, smashing information into music. It is hosted by Lulu Miller and Latif Nasser.

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In the summer of 1975, Jaws scared an entire generation out of the water. The film burned an idea into our cultural memory: they are mindless, man-eating monsters. We set out to tell a different story about sharks. Five stories over five days. We tear down deep-seated myths about sharks, plunge into the water with them, and find sharks that explode our sense of what they are – flying sharks, glowing sharks, baby sharks, sharks under attack, and sharks that may save millions of human lives.

Look out for brand-new episodes in your podcast feed starting June 16th through June 20th. 

Visit our YouTube channel to check out the video trailer for the series and make sure to subscribe for more behind the scenes content throughout the week.  

For more details about the series, visit radiolab.org/sharks

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We first aired this episode in 2012, but at the show we’ve been thinking a lot about resilience and repair so we wanted to play it for you again today. It’s about a man who experienced maybe one of the most chilling traumas… twice. But then, it leads us to a story of generational repair. 

On the morning of August 6th, 1945, Tsutomu Yamaguchi was in Hiroshima on a work trip. He was walking to the office when the first atomic bomb was dropped about a mile away. He survived, and eventually managed to get himself onto a train back to his hometown... Nagasaki. The very next morning, as he tried to convince his boss that a single bomb could destroy a whole city, the second bomb dropped. Author Sam Kean tells Jad and Robert the incredible story of what happened to Tsutomu, explains how gamma rays shred DNA, and helps us understand how Tsutomu sidestepped a thousand year curse.

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Leadership support for Radiolab’s science programming is provided by the Simons Foundation and the John Templeton Foundation. Foundational support for Radiolab was provided by the Alfred P. Sloan Foundation.

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Doctor and special correspondent, Avir Mitra takes Lulu on an epic journey live on stage at a little basement club called Caveat, here in New York. Starting with an ingredient in breastmilk that babies can’t digest, a global hunt that takes us from Bangladesh to the Mennonite communities here in the US, we discover an ancient symbiotic relationship that might be on the verge of disappearing.  So sip a vicarious cocktail, settle in, and explore the surprising ways our bodies forge deep, invisible connections that shape our lives.

This live show is part of a series we are doing with Avir that we are calling “Viscera.” Each event is conversation that takes the audience on journey into a quirk or question or mystery inside of us, and gives them a visceral experience with the viscera of us. The previous installment of the series, was called “How to Save a Life.”

Special thanks to Tim Brown, David Mills, Carlito Lebrilla, Bethany Henrik, Danielle Lemay, Katie Hinde, Jennifer Smilowitz, Angela Zivkovic, Daniela Barile, Mark Underwood

EPISODE CREDITS:
Reported by -Avir Mitra
with help from - Anisa Vietze
Original music from - Dylan Keefe
Sound design contributed by - Dylan Keefe, Iván Barenboim
Fact-checking by -Natalie Middleton.

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Radiolab is supported by listeners like you. Support Radiolab by becoming a member of The Lab (https://members.radiolab.org/) today.

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Leadership support for Radiolab’s science programming is provided by the Simons Foundation and the John Templeton Foundation. Foundational support for Radiolab was provided by the Alfred P. Sloan Foundation.

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Animals rescue people all the time, but not like this. In this episode, first aired more than a decade ago, Jim Eggers is a 44-year-old man who suffers from a problem that not only puts his life at risk—it jeopardizes the safety of everybody around him. But with the help of Sadie, his pet African Grey Parrot, Jim found an unlikely way to manage his anger. African Grey Parrot expert Irene Pepperberg helps us understand how this could work, and shares some insights from her work with a parrot named Alex.

And one quick note from our producer Pat Walters: Jim considers Sadie to be a “service animal,” a designation under the Americans with Disabilities Act that protects the rights of individuals with disabilities to bring certain animals into public places. The term service animal sometimes is legally limited to include only dogs and miniature horses. 

Jim disagrees with those limitations, but the local bus company, regardless of definitions, said they’ll make an exception for Sadie.

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Today you can convert speech to text with the click of a button. Youtube does it for all our videos. Our phones will do it in real time. It’s frictionless. And yet, if it weren’t for an unlikely crew of protesters and office workers, it might still be impossible. 

This week, the story of our attempts to make the spoken visible. The magicians who tried. And the crazy spell that finally did it. 

EPISODE CREDITS: 
Reported by - Simon Adler
Produced by - Simon Adler
Original music from - Simon Adler
Sound design contributed by - Simon Adler 
with mixing help from - Jeremy Bloom
Fact-checking by - Anna Pujol-Mazzini

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Radiolab is supported by listeners like you. Support Radiolab by becoming a member of The Lab (https://members.radiolab.org/) today.

Follow our show on Instagram, Twitter and Facebook @radiolab, and share your thoughts with us by emailing [email protected].

Leadership support for Radiolab’s science programming is provided by the Simons Foundation and the John Templeton Foundation. Foundational support for Radiolab was provided by the Alfred P. Sloan Foundation.

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Now that we have the ability to see inside the brain without opening anyone's skull, we'll be able to map and define brain activity and peg it to behavior and feelings. Right? Well, maybe not, or maybe not just yet. It seems the workings of our brains are rather too complex and diverse across individuals to really say for certain what a brain scan says about a person. But Nobel prize winner Eric Kandel and researcher Cynthia Fu tell us about groundbreaking work in the field of depression that just may help us toward better diagnosis and treatment.

Anything that helps us treat a disease better is welcome. Doctors have been led astray before by misunderstanding a disease and what makes it better. Neurologist Robert Sapolsky tells us about the turn of the last century, when doctors discovered that babies who died inexplicably in their sleep had thymus glands that seemed far too large. Blasting them with radiation shrank them effectively, and so was administered to perfectly healthy children to prevent this sudden infant death syndrome...

Leadership support for Radiolab’s science programming is provided by the Simons Foundation and the John Templeton Foundation. Foundational support for Radiolab was provided by the Alfred P. Sloan Foundation.

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What happens when a voice emerges? What happens when one is lost? Is something gained? A couple months ago, Lulu guest edited an issue of the nature magazine Orion. She called the issue “Queer Planet: A Celebration of Biodiversity,” and it was a wide-ranging celebration of queerness in nature. It featured work by amazing writers like Ocean Vuong, Kristen Arnett, Carmen Maria Machado and adrienne maree brown, among many others. But one piece in particular struck Lulu as something that was really meant to be made into audio, an essay called “Key Changes,” by the writer Sabrina Imbler. If their name sounds familiar, it might be because they’ve been on the show before. In this episode, we bring you Sabrina’s essay – which takes us from the beginning of time, to a field of crickets, to a karaoke bar – read by the phenomenal actor Becca Blackwell, and scored by our director of sound design Dylan Keefe. Stay to the end for a special surprise … from Amy Ray of the Indigo Girls!

Special thanks to Jay Gallagher from UC Davis.

EPISODE CREDITS: 
Reported by - Sabrina Imbler
Produced by - Annie McEwen and Pat Walters
with help from - Maria Paz Gutiérrez
Original music from - Dylan Keefe
Fact-checking by - Kim Schmidt
and Edited by  - Tajja Isen and Pat Walters

EPISODE CITATIONS:

Articles - 
Check out Queer Planet: A Celebration of Biodiversity, Orion Magazine (Spring 2025)
Read Sabrina Imbler’s original essay, “Key Changes,” Orion Magazine (Spring 2025)
Read Lulu Miller’s mini-essay, “Astonishing Immobility,” Orion Magazine (Spring 2025)
Check out Sabrina Imbler’s Defector column Creaturefector all about animals

Audio - 
Listen to Amy Ray’s song “Chuck Will’s Widow” from her solo album If It All Goes South

Books - 
How Far the Light Reaches: A Life in Ten Sea Creatures, by Sabrina Imbler

Signup for our newsletter!! It includes short essays, recommendations, and details about other ways to interact with the show. Sign up (https://radiolab.org/newsletter)!

Radiolab is supported by listeners like you. Support Radiolab by becoming a member of The Lab (https://members.radiolab.org/) today.

Follow our show on Instagram, Twitter and Facebook @radiolab, and share your thoughts with us by emailing [email protected].

Leadership support for Radiolab’s science programming is provided by the Simons Foundation and the John Templeton Foundation. Foundational support for Radiolab was provided by the Alfred P. Sloan Foundation.

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Today we bring you a story stranger than fiction. In 2006, paleobiologist Natalia Rybczynski took a helicopter to a remote Arctic island near the North Pole, spending her afternoons scavenging for ancient treasures on the ground. One day, she found something the size of a potato chip. Turns out, it was a three and half million year old chunk of bone. 

Keep reading if you’re okay with us spoiling the surprise.

It’s a camel! Yes, the one we thought only hung out in deserts. Originally from North America, the camel trotted around the globe and went from snow monster to desert superstar. We go on an evolutionary tour of the camel’s body and learn how the same adaptations that help a camel in a desert also helped it in the snow. Plus, Lulu even meets one in the flesh. 

Special thanks to Latif Nasser for telling us this story. It was originally a TED Talk where he brought out a live camel on stage. Thank you also to Carly Mensch, Juliet Blake, Anna Bechtol, Stone Dow, Natalia Rybczynski and our camel man, Shayne Rigden. If you are in Wisconsin, you can go meet his camels at Rigden Ranch. And follow his delightful TikTok @rigdenranch to see camels in the snow!  

Terrestrials was created by Lulu Miller with WNYC Studios. This episode was produced by Ana González, Alan Goffinski, Mira Burt-Wintonick, Joe Plourde, Lulu Miller, and Sarah Sandbach, with help from Tanya Chawla and Natalia Ramirez. Fact checking by Anna Pujol-Mazzini. 

Our advisors this season are Ana Luz Porzecanski, Anil Lewis, Dominique Shabazz, and Liza Demby.

Support for Terrestrials also comes from the Simons Foundation, the Arthur Vining Davis Foundations, and the John Templeton Foundation.

Signup for our newsletter!! It includes short essays, recommendations, and details about other ways to interact with the show. Sign up (https://radiolab.org/newsletter)!

Radiolab is supported by listeners like you. Support Radiolab by becoming a member of The Lab (https://members.radiolab.org/) today.

Follow our show on Instagram, Twitter and Facebook @radiolab, and share your thoughts with us by emailing [email protected].

Leadership support for Radiolab’s science programming is provided by the Simons Foundation and the John Templeton Foundation. Foundational support for Radiolab was provided by the Alfred P. Sloan Foundation.

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For years, scientists thought nothing could live above 73℃/163℉.  At that temperature, everything boiled to death. But scientists Tom Brock and Hudson Freeze weren’t convinced. What began as their simple quest to trawl for life in some of the hottest natural springs on Earth would, decades later, change the trajectory of biological science forever, saving millions of lives—possibly even yours.

This seismic, totally unpredictable discovery, was funded by the U.S. government. This week, as the Trump administration slashes scientific research budgets en masse, we tell one story, a parable about the unforeseeable miracles that basic research can yield. After that, a familiar voice raises some essential questions: what are we risking with these cuts? And can we recover?

Special thanks to Joanne Padrón Carney, Erin Heath, Valeria Sabate, Gwendolyn Bogard, Meredith Asbury and Megan Cantwell at AAAS. Thank you as well to Gregor Čavlović and Derek Muller and the rest of the Veritasium team.

EPISODE CREDITS: 
Reported by - Latif Nasser
with help from - Maria Paz Gutiérrez
Produced by - Sarah Qari and Maria Paz Gutiérrez
Original music and sound design and mixing from - Jeremy Bloom
Fact-checking by - Emily Kreiger
and Edited by  - Alex Neason with help from Sarah Qari

EPISODE CITATIONS:

Videos - 
Latif also helped make a version of this story with the YouTube channel Veritasium. 

Articles - 
Hudson Freeze NYT OPED: Undercutting the Progress of American Science

Books -
Thomas Brock, A Scientist in Yellowstone National Park
Paul Rabinow’s Making PCR: A Story of Biotechnology

Podcasts Episodes:
If you haven’t heard, listen to our first episode about the Golden Goose awards. 

Signup for our newsletter!! It includes short essays, recommendations, and details about other ways to interact with the show. Sign up (https://radiolab.org/newsletter)!

Radiolab is supported by listeners like you. Support Radiolab by becoming a member of The Lab (https://members.radiolab.org/) today.

Follow our show on Instagram, Twitter and Facebook @radiolab, and share your thoughts with us by emailing [email protected].

Leadership support for Radiolab’s science programming is provided by the Gordon and Betty Moore Foundation, Science Sandbox, a Simons Foundation Initiative, and the John Templeton Foundation. Foundational support for Radiolab was provided by the Alfred P. Sloan Foundation.

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