When wildlife conservationist Alan Rabinowitz was a boy, he had a stutter. Strangely, his stutter vanished when he spoke to animals. One day, when his father took him to the Bronx Zoo, Alan saw a majestic jaguar and made a promise to it. He spent the rest of his life fulfilling that promise.

Read Alan Rabinowitz’s picture book: “A Boy and a Jaguar.”

Radiolab was created by Jad Abumrad and is edited by Soren Wheeler. Lulu Miller and Latif Nasser are our co-hosts. Dylan Keefe is our director of sound design. Our staff includes: Simon Adler, Jeremy Bloom, Becca Bressler, W. Harry Fortuna, David Gebel, Maria Paz Gutiérrez, Sindhu Gnanasambandan, Matt Kielty, Annie McEwen, Alex Neason, Valentina Powers, Sarah Qari, Sarah Sandbach, Arianne Wack, Pat Walters and Molly Webster. Our fact-checkers are Diane Kelly, Emily Krieger and Natalie Middleton. Production help from Tanya Chawla. Sound mixing by Joe Plourde.

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Support for Terrestrials is provided by the Simons Foundation, the Arthur Vining Davis Foundations, the Kalliopeia Foundation and the John Templeton Foundation.

Next week is Valentine’s Day, but instead of talking about falling in love, we’re going to talk about falling cats and barrels. First, writer David Quammen tells us about a strange observation: cats are falling out of buildings in New York City. When a cat falls from less than five stories or more than nine stories, it usually survives. But when it falls from between five and nine stories, it suffers serious injury. Why? Physics has the answer. 

Then we meet Annie Taylor, the first person who went over Niagara falls in a barrel. 

For more, check out Garret Soden’s “Falling: How Our Greatest Fear Became Our Greatest Thrill.”

Radiolab was created by Jad Abumrad and is edited by Soren Wheeler. Lulu Miller and Latif Nasser are our co-hosts. Dylan Keefe is our director of sound design. Our staff includes: Simon Adler, Jeremy Bloom, Becca Bressler, W. Harry Fortuna, David Gebel, Maria Paz Gutiérrez, Sindhu Gnanasambandan, Matt Kielty, Annie McEwen, Alex Neason, Valentina Powers, Sarah Qari, Sarah Sandbach, Arianne Wack, Pat Walters and Molly Webster. Our fact-checkers are Diane Kelly, Emily Krieger and Natalie Middleton. Production help from Tanya Chawla. Sound mixing by Joe Plourde.

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Support for Terrestrials is provided by the Simons Foundation, the Arthur Vining Davis Foundations, the Kalliopeia Foundation and the John Templeton Foundation.

On January 29, in places like China, Malaysia, Korea and Chinatowns across the globe, dragons will rise in the form of massive puppets. Today we bring you a special Terrestrials episode on dragons to understand what they have to do with the New Year, what the dragon myth means, and explore the tiny chance that dragons could have ever been real. 

First, we meet Mr. Lu Dajie, one of China's most renowned dragon dancers, who tells us about the significance of dragons in China. Then producer bud Ana and song bud Alan ask whether there’s any chance that dragons were ever real. And if not, could we make  a dragon out of the things already evolved on Earth? Were there any reptiles as large as and shaped like dragons? Any large reptiles that flew? Any that spat fire? The answers may surprise you.

Terrestrials was created by Lulu Miller with WNYC studios. This episode was produced by Brenna Farrel, Mira Burt-Wintonick, Alan Goffinski, Ana González, Tanya Chawla, Joe Plourde, Sarah Sandbach, Valentina Powers and Lulu Miller. Fact-checking by Diane Kelly. 

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 [email protected].

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Support for Terrestrials is provided by the Simons Foundation, the Arthur Vining Davis Foundations, the Kalliopeia Foundation and the John Templeton Foundation.

Today we bring you an episode from our friends over at The Big Fib. In the era of fake news, kids need to learn to be able to tell what’s true from what’s false. And what better way to do that than a game show that puts kids in the driver’s seat, adults in the hot seat, and a sound-effects robot strapped to the roof?

Each week, a kid interviews one fake and one real expert on a particular topic and they have to figure out who’s the true expert and who’s a liar. In this episode, they interview two star experts on exoplanets, star nurseries, how stars turn into supernovas, shooting stars, white dwarf stars, telescopes, and much more. Can you figure out who’s lying about stars?

For more shows, visit GZMshows.com. To hear all episodes of The Big Fib ad-free subscribe now.

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Support for Terrestrials is provided by the Simons Foundation, the Arthur Vining Davis Foundations, the Kalliopeia Foundation and the John Templeton Foundation.

For centuries, the stomach was a black box to humans. We didn’t understand the mystery of what happened to food after it went inside us. That is, until the early 1800s, when Dr. William Beaumont found a boy, Alexis St. Martin, with a hole in his stomach. 

Writer Mary Roach brings us that story. She first sticks her hand inside the stomach of a live cow and then tells us how Beaumont conducted experiments on St. Martin to understand how the stomach breaks down food. This strange relationship between doctor and patient changed the way we understand digestion. 

Also, we have a brand new Terrestrials coming up just in advance of the Lunar New Year. We will be diving into the history and science of one of the animals associated with the festival. Check back in two weeks to hear that story. 

For more on guts, read:

Mary Roach, “Gulp: Adventures on the Alimentary Canal”

Fred Kaufman, “A Short History of the American Stomach”

Radiolab was created by Jad Abumrad and is edited by Soren Wheeler. Lulu Miller and Latif Nasser are our co-hosts. Dylan Keefe is our director of sound design. Our staff includes: Simon Adler, Jeremy Bloom, Becca Bressler, W. Harry Fortuna, David Gebel, Maria Paz Gutiérrez, Sindhu Gnanasambandan, Matt Kielty, Annie McEwen, Alex Neason, Valentina Powers, Sarah Qari, Sarah Sandbach, Arianne Wack, Pat Walters and Molly Webster. Our fact-checkers are Diane Kelly, Emily Krieger and Natalie Middleton. Production help from Tanya Chawla. Sound mixing by Joe Plourde.

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Radiolab for Kids and Terrestrials are supported by listeners like you. Support Radiolab by becoming a member of The Lab today.

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Support for Terrestrials is provided by the Simons Foundation, the Arthur Vining Davis Foundations, the Kalliopeia Foundation and the John Templeton Foundation.

To celebrate New Year’s Day, there are all kinds of traditions. Some people eat black eyed peas for good luck, some list out resolutions. But here at Terrestrials, we are taking a cue from the wisdom of pets, who are so, so, so good at sleeping. After a short preamble from Lulu, we’ll turn the microphone over to listeners’ furry friends snoring and snoozing in various positions, places, and locations. The piece will be largely wordless, with some narration from listeners describing their pets, and sound designed as a sort of meditation to rest.

Sign up for Radiolab for Kids’s newsletter! It includes short essays, recommendations, and details about other ways to interact with the show. Sign up here.

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Support for Terrestrials is provided by the Simons Foundation, the Arthur Vining Davis Foundations, the Kalliopeia Foundation and the John Templeton Foundation.

The year’s best celestial event was, without a doubt, April’s solar eclipse. The moon went in front of the sun to cast a 115 mile wide shadow on Earth. A swathe of North America was showered in sudden darkness. In honor of the eclipse, the Radiolab team made a show about the star of the show: the moon. 

We think we know the moon — we know that humanity visited it, that it’s a shiny white rotating rock in the sky. But what else really? In today’s episode, the team tells us about the moon’s formation, moon dust, moon-quakes, moon volcanoes, how the moon causes the tides on the Earth, and what the temperature up there is like. Turns out, we’ve barely scratched the surface.

For more, check out Rebecca Boyle’s book, ‘Our Moon: How the Earth’s Celestial Companion Transformed the Planet, Guided Evolution and Made Us Who We Are’

Radiolab was created by Jad Abumrad and is edited by Soren Wheeler. Lulu Miller and Latif Nasser are our co-hosts. Dylan Keefe is our director of sound design. Our staff includes: Simon Adler, Jeremy Bloom, Becca Bressler, W. Harry Fortuna, David Gebel, Maria Paz Gutiérrez, Sindhu Gnanasambandan, Matt Kielty, Annie McEwen, Alex Neason, Valentina Powers, Sarah Qari, Sarah Sandbach, Arianne Wack, Pat Walters and Molly Webster. Our fact-checkers are Diane Kelly, Emily Krieger and Natalie Middleton. Production help from Tanya Chawla. Sound mixing by Joe Plourde.

Sign up for Radiolab for Kids’s newsletter! It includes short essays, recommendations, and details about other ways to interact with the show. Sign up here.

Radiolab for Kids and Terrestrials are supported by listeners like you. Support Radiolab by becoming a member of The Lab today.

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Support for Terrestrials is provided by the Simons Foundation, the Arthur Vining Davis Foundations, the Kalliopeia Foundation and the John Templeton Foundation.

Today we bring you an episode from our friends over at Atlas Obscura. It's about something that for centuries people thought was a tall tale, something sailors would occasionally spot out in the waves like mermaids or the Loch Ness monster, but most people on the land didn't think was real. Until one day, when a satellite in the sky was able to solve the case. 

Host Dylan Thuras tells us the story of a satellite scientist and a ship captain in search of gigantic swaths of bioluminescence that radiate up from the surface of the sea over thousands of square miles.

For more, check out the Atlas Obscura podcast. It’s an audio guide to the world’s wondrous, awe-inspiring, strange places. In under 15 minutes, it’ll take you to an incredible site, and along the way you’ll meet some fascinating people and hear their stories. Listen Monday through Thursday to explore a new wonder.

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Radiolab for Kids and Terrestrials are supported by listeners like you. Support Radiolab by becoming a member of The Lab today.

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Support for Terrestrials is provided by the Simons Foundation, the Arthur Vining Davis Foundations, the Kalliopeia Foundation and the John Templeton Foundation.

In less than 10 days, the world will witness the winter solstice, or the shortest day of the year. Half of the Earth will be tilted the farthest away from the sun, and we will plunge into the dark. So today we thought we’d play another story about the dark. One of the darkest places in the universe actually: a black hole. But not just any black hole, a really tiny black hole, the size of an atom.

We start the story on a calm morning in Siberia. All of a sudden, a large ball of fire appears in the sky. A forest was flattened, roofs were blown off houses, windows were shattered, fish were thrown from streams. This was the “Tunguska event.” But what happened? What hit Earth? It’s still up for debate. Radiolab producer Annie McEwen explores the possibility that it might have been a tiny black hole. Then Senior Correspondent Molly Webster asks what happens to the stuff that falls into a black hole, and tells us about how finding an answer culminated into her writing a children’s book called “Little Black Hole!”

Special thanks to Matt Caplan, a physicist at Illinois State University who worked on a team whose recent paper taught us what the impact crater left behind by a primordial black hole would actually look like. We also want to thank Priyamvada Natarajan and Brian Greene. 

Articles:

Read more about the Tunguska impact event!

Check out the paper which considers the shape of the crater a primordial black hole would make, should it hit earth: “Crater Morphology of Primordial Black Hole Impacts”

Curious to learn more about black holes possibly being dark matter? You can in the paper, “Exploring the high-redshift PBH- ΛCDM Universe: early black hole seeding, the first stars and cosmic radiation backgrounds” 

Books: 

Get your glow on – check out Senior Correspondent Molly Webster’s new kids book, a fictional tale about a lonely “Little Black Hole.”

Radiolab was created by Jad Abumrad and is edited by Soren Wheeler. Lulu Miller and Latif Nasser are our co-hosts. Dylan Keefe is our director of sound design. Our staff includes: Simon Adler, Jeremy Bloom, Becca Bressler, W. Harry Fortuna, David Gebel, Maria Paz Gutiérrez, Sindhu Gnanasambandan, Matt Kielty, Annie McEwen, Alex Neason, Valentina Powers, Sarah Qari, Sarah Sandbach, Arianne Wack, Pat Walters and Molly Webster. Our fact-checkers are Diane Kelly, Emily Krieger and Natalie Middleton. Production help from Tanya Chawla. Sound mixing by Joe Plourde.

Sign up for Radiolab for Kids’s newsletter! It includes short essays, recommendations, and details about other ways to interact with the show. Sign up here.

Radiolab for Kids and Terrestrials are supported by listeners like you. Support Radiolab by becoming a member of The Lab today.

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Support for Terrestrials is provided by the Simons Foundation, the Arthur Vining Davis Foundations, the Kalliopeia Foundation and the John Templeton Foundation.

Radiolab co-host Latif Nasser was putting his child to sleep one day when he noticed a poster of the solar system on the wall. It showed that Venus had a moon called Zoozve. When he looked it up, the internet told him that Venus did not have a moon. And searching “Zoozve” gave him a bunch of Czech results about zoos. This moment sets Latif off on a curiosity odyssey. What is the mystery behind this moon? Turns out, it’s both a moon and not a moon. And we get to name one. 

And now that you know all about quasi-moons, we have some fun news! Radiolab, along with the official governing bodies of space, want YOU to pick your favorite name for one of Earth’s newly discovered quasi-moons. Go to radiolab.org/quasi-moon to vote for the finalists. The winner will be chosen soon, so go help name a MOON!

Special Thanks to Larry Wasserman and everyone else at the Lowell Observatory, Rich Kremer and Marcelo Gleiser of Dartmouth College, and Benjamin Sharkey at the University of Maryland. Thanks to the IAU and their Working Group for Small Bodies Nomenclature, as well as to the Bamboo Forest class of kindergarteners and first graders. 

Articles:

Check out the paper by Seppo Mikkola and Paul Wiegert (whose voices are in the episode), along with colleagues Kimmo Innanen and Ramon Brasser describing this new type of object here (https://zpr.io/Ci4B3sGWZ3xi).

The Official Rules and Guidelines for Naming Non-Cometary Small Solar-System Bodies from the IAU Working Group on Small Body Nomenclature can be found here (https://zpr.io/kuBJYQAiCy7s).

All the specs on our strange friend can be found here (https://zpr.io/Tzg2sHhAp2kb).

Check out Liz Landau’s work at NASA's Curious Universe podcast https://zpr.io/QRbgZbMU2gWW) as well as lizlandau.com

Videos:

Fascinating little animation of a horseshoe orbit (https://zpr.io/A9y6qHhzZtpA), a tadpole orbit (https://zpr.io/4qBDbgumhLf2), and a quasi-moon orbit (https://zpr.io/xtLhwQFGZ4Eh). 

Posters:

If you’d like to buy (or even just look at) Alex Foster’s Solar System poster (featuring Zoozve of course), check it out here (https://zpr.io/dcqVEgHP43SJ). 

Radiolab was created by Jad Abumrad and is edited by Soren Wheeler. Lulu Miller and Latif Nasser are our co-hosts. Dylan Keefe is our director of sound design. Our staff includes: Simon Adler, Jeremy Bloom, Becca Bressler, W. Harry Fortuna, David Gebel, Maria Paz Gutiérrez, Sindhu Gnanasambandan, Matt Kielty, Annie McEwen, Alex Neason, Valentina Powers, Sarah Qari, Sarah Sandbach, Arianne Wack, Pat Walters and Molly Webster. Our fact-checkers are Diane Kelly, Emily Krieger and Natalie Middleton. Production help from Tanya Chawla. Sound mixing by Joe Plourde.

Sign up for Radiolab for Kids’s newsletter! It includes short essays, recommendations, and details about other ways to interact with the show. Sign up here.

Radiolab for Kids and Terrestrials are supported by listeners like you. Support Radiolab by becoming a member of The Lab today.

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Support for Terrestrials is provided by the Simons Foundation, the Arthur Vining Davis Foundations, the Kalliopeia Foundation and the John Templeton Foundation.