PODCAST

Radiolab

WNYC Studios

Investigating a strange world.

science natural sciences

All Episodes

Brain Balls

Radiolab ·

2026/01/09

When neuroscientist Madeline Lancaster was a brand new postdoc, she accidentally used an expired protein gel in a lab experiment and noticed something weird. The stem cells she was trying to grow in a dish were self-assembling. The result? Madeline was the first person ever to grow what she called a “cerebral organoid,” a tiny, 3D version of a human brain the size of a peppercorn.In about a decade, these mini human brain balls were everywhere. They were revealing bombshell secrets about how our

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Moon Trees

Radiolab ·

2026/01/02

In 1971, a red-headed, tree-loving astronaut named Stu ‘Smokey’ Roosa was asked to take something to the moon with him. Of all things, he chose to take a canister of 500 tree seeds. After orbiting the moon 34 times, the seeds made it back to Earth. NASA decided to plant the seeds all across the country and then… everyone forgot about them. Until one day, a third grader from Indiana stumbled on a tree with a strange plaque: "Moon Tree." This discovery set off a cascading search for all the trees that

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Fertility Cliff

Radiolab ·

2025/12/26

As she -- and her friends — approached the age of 35, senior correspondent Molly Webster kept hearing a phrase over and over: “fertility cliff.” It was a short-hand term to describe what she was told would happen to her fertility after she turned 35 — that is, it would drop off. Suddenly, sharply, dramatically. And this was well before she was supposed to hit menopause. Intrigued, Molly decided to look into it — what was the truth behind this so-called cliff, and when, if so, would she topple? This

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The Good Show

Radiolab ·

2025/12/19

The standard view of evolution is that living things are shaped by cold-hearted competition. And there is no doubt that today's plants and animals carry the genetic legacy of ancestors who fought fiercely to survive and reproduce. But in this hour that we first broadcast back in 2010, we wonder whether there might also be a logic behind sharing, niceness, kindness ... or even, self-sacrifice. Is altruism an aberration, or just an elaborate guise for sneaky self-interest? Do we really live in a

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The Alien in the Room

Radiolab ·

2025/12/12

It’s faster than a speeding bullet. It’s smarter than a polymath genius. It’s everywhere but it’s invisible. It’s artificial intelligence. But what actually is it?Today we ask this simple question and explore why it’s so damn hard to answer. Special thanks to Stephanie Yin and the New York Institute of Go for teaching us the game. Mark, Daria and Levon Hoover Brauner for helping bring NETtalk to life. And a huge thank you to Grant Sanderson for his unending patience explaining the math of neural

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Shell Game: Minimum Viable Company

Radiolab ·

2025/12/05

A year ago we brought you a show called Shell Game where a journalist named Evan Ratliff made an AI copy of himself. Now on season two of the show, Evan’s using AI to do more than just mimic himself—he’s starting a company staffed entirely by AI agents, and making a podcast about the experience. The show is a smart, funny, and truly bizarre look at what AI can do—and what it can’t.This week we bring you the first episode of Shell Game Season Two, "Minimum Viable Company." You can sign up to get the

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The Mysteries of Menopause

Radiolab ·

2025/12/03

Until recently, scientists assumed humans were the only species in which females went through menopause, and lived a substantial part of their lives after they were no longer able to reproduce. And they had no idea why that happens, and why evolution wouldn’t push females to keep reproducing right up to the end of their lives. But after a close look at some whale poop, and a deep dive into chimp life, we find several new ways of thinking about menopause and the real purpose of this all too often

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Fela Kuti: Enter the Shrine

Radiolab ·

2025/11/28

Our original host Jad Abumrad returns to share a new podcast series he’s just released. It’s all about Fela Kuti, a Nigerian musician who created a genre, then a movement, then tried to use his hypnotic beats to topple a military dictatorship. Jad tells us about the series and why he made it, and we play the episode that, for us at least, gets to the heart of the matter: How exactly does his music work? What actually happens to the people who hear it and how does it move them to action?You can find

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Our Common Nature: West Virginia Coal

Radiolab ·

2025/11/21

Today on the show, we’re bringing you an episode from Our Common Nature (https://link.podtrac.com/v7mx144d), a new podcast series where cellist Yo-Yo Ma and host Ana González travel around the United States to meet people, make music and better understand how culture binds us to nature. The series features a few familiar voices, including Ana González (host) and Alan Goffinski (producer), from our kids podcast, Terrestrials (https://link.podtrac.com/vysacqn1). About the episode: West Virginia is

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Quantum Refuge

Radiolab ·

2025/11/14

Qasem Waleed is a 28-year-old physicist who has lived in Gaza his whole life. In 2024, he joined a chorus of Palestinians sharing videos and pictures and writing about the chaos and violence they were living through, as Israel’s military bombardment devastated their lives. But Qasem was trying to describe his reality through the lens of the most notoriously confusing and inscrutable field of science ever, quantum mechanics. We talked to him, from a cafe near the Al-Mawasi section of Gaza, to find

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The Wubi Effect

Radiolab ·

2025/11/07

When we think of China today, we think of a technological superpower. From Huawei and 5G to TikTok and viral social media, China is stride for stride with the United States in the world of computing. However, China’s technological renaissance almost didn’t happen. And for one very basic reason: the Chinese language, with its 70,000 plus characters, couldn’t fit on a keyboard.Today, we tell the story of Professor Wang Yongmin, a hard-headed computer programmer who solved this puzzle and laid the

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The Glow Below

Radiolab ·

2025/10/31

A call to oceanographer Edie Widder about a fish with a very odd immune system quickly becomes something else: a dive into the deep sea, into a world of brilliant light. But down there, the light doesn’t behave like light -- it sparkles and glows, but also drips, squirts, and dribbles. Today, find out how creatures make the light and how they use it, from hunting and hiding to maybe even … talking. And hear about a series of mysterious moments where Edie goes from studying the creatures to becoming

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What Up Holmes?

Radiolab ·

2025/10/24

Love it or hate it, the freedom to say obnoxious and subversive things is the quintessence of what makes America America. But our say-almost-anything approach to free speech is actually relatively recent, and you can trace it back to one guy: a Supreme Court justice named Oliver Wendell Holmes. Even weirder, you can trace it back to one seemingly ordinary eight-month period in Holmes’s life when he seems to have done a logical U-turn on what should be say-able. Why he changed his mind during those

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Content Warning

Radiolab ·

2025/10/17

Over the past five years TikTok has radically changed the online world. But trust us when we say it’s not how you’d expect.Today we continue our years-long exploration of what you can and can’t post online. We look at how Facebook’s approach to free speech has evolved since Trump’s victory, how TikTok upended everything we see, and what all this means for the future of our political and digital lives. Special thanks to Kate KlonickEPISODE CREDITS: Reported by Simon AdlerProduced by Simon

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Creation Story

Radiolab ·

2025/10/10

Ella al-Shamahi is one part Charles Darwin, one part Indiana Jones. She braves war zones and pirate-infested waters to collect fossils from prehistoric caves, fossils that help us understand the origin of our species. Her recent hit BBC / PBS series Human follows her around the globe trying to piece together the unlikely story of how early humans conquered the world. But Ella’s own origins as an evolutionary biologist are equally unlikely. She sits down with us and tells us a story she has rarely

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Adoptive Couple v. Baby Girl

Radiolab ·

2025/10/03

This is the story of a three-year-old girl and the highest court in the land. The Supreme Court case Adoptive Couple v. Baby Girl is a legal battle that has entangled a biological father, a heart-broken couple, and the tragic history of Native American children taken from their families. We originally released this story back in 2013, when that girl’s fate was still in the balance of various legal decisions. We thought now was a good time to bring the story back, because the Act at the center of the

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Voice

Radiolab ·

2025/09/26

Over the course of millions of years, human voices have evolved to hold startling power. These clouds of vibrating air carry crucial information about who we are–and we rely on them to push ourselves up and out into the physical world.This week, we’re on a journey to understand how we got our unique sonic fingerprint, the power it affords us, and what happens when it’s taken away. Special thanks to Alice Wong, Wren Farrell, Hector Espinal and his parents, Crisaly and Hector Espinal, Mary Croke,

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The Spark of Life

Radiolab ·

2025/09/19

In the 1920s, a Russian biologist studying onion roots made a surprising discovery: underground, down in the darkness, it seemed like the cells inside the onion roots were making their own … light.The “onion root experiment” went on to become something of a cult classic in science, and eventually the biologically-made light was dubbed “biophotons.” In the ensuing century, biophoton discoveries moved from onion roots to bacteria, frog embryos, and humans. Today, scientist Nirosha Murugan is on a

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Los Frikis

Radiolab ·

2025/09/12

How a group of 80’s Cuban misfits found rock-and-roll and created a revolution within a revolution, going into exile without ever leaving home. Reporter Luis Trelles brings us the story of punk rock’s arrival in Cuba and a small band of outsiders who sentenced themselves to death and set themselves free. We originally released this episode back in 2015 in a collaboration with Radio Ambulante, but the story is so fascinating (and, in many ways, still relevant) that we haven’t stopped thinking about

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Screaming Into the Void

Radiolab ·

2025/09/05

In August, we performed a live taping of the show from a theater perched on the edge of Manhattan, overlooking the Hudson River, overshadowed by the wide open night sky. Three stories about voids. One about a fish that screams into the night—and the mystery of its counterpart that doesn’t. Another about a group of women who gazed at the night sky and taught us just how vast the universe is, and a third about a man who talk to aliens, and the people who tell him he’s putting human civilization at

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