Radiolab

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 brains develop in the womb, helping treat advanced cancer patients, being implanted into...

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 visited the moon across the United States. Science writer, and our ve...

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 story first premiered in “Thirty Something,” a 2018 Radiolab live show that was part of, Gonads...

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 selfish, dog-eat-dog world? Or has evolution carved out a hidden code that rewards genuine cooperation?

Sign...

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 nets to us. To lea...

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 2 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...

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...

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 defined by its beauty and its coal, two things that can work a...

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 out why. And over the course of several conversations, he told us how this reality-breaking corner of...

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 foundation for the China we know today.

Special thanks to Martin Howard...

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 one of them. 

EPISODE CREDITS: 
Hosted by - M...

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 eight months is one of the greatest mysteries in the history of the...

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 yearslong 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 Klonick

EPISODE CREDITS: 

Reported by - Simon Adler
Produced by - Simon...

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 shared publicly, about how she came to believe in evolution, and how much that bel...

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 story is still being questioned.

When then-producer Ti...

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, Nancy Kielty, Beth McEwen, Robin Feuer Miller...

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 career-defining journey to learn more about the light. As she and her colleagues study this mysterious phenomenon, they find themselves...

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 it. 

Special thanks to the bands VIH, Eskoria, Metamorfosis and Alio Die & Mariolina Zitta fo...

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 risk by doing so. Finally...

With this episode, we’re putting on our music hat. For a program that relies so much on scoring and sound, it’s not often we talk about the musicians and the music they make that inspire us. Today, that changes. Today, we bring you two stories. Each about musicians that our former host and creator of Radiolab, Jad Abumrad, loves. 

We originally released these stories many years ago, and both start deep in music itself. Then quickly, they dig deeper — into our relationships with technology, and ourselves. 

We start with the band Dawn of Midi, wh...

As he finished his medical school exam, David Fajgenbaum felt off.  He walked down to the ER and checked himself in.  Soon he was in the ICU with multiple organ failure.  The only drug for his condition didn’t work. He had months to live, if that.  If he was going to survive, he was going to have to find his own cure. Miraculously, he pulled it off in the nick of time. From that ordeal, he realized that our system of discovering and approving drugs is far from perfect, and that he might be able to use AI to fin...

In an episode first released in 2010, then-producer Lulu Miller drives to Michigan to track down the endangered Kirtland’s warbler. Efforts to protect the bird have lead to the killing of cowbirds (a species that commandeers warbler nests), and a prescribed burn aimed at creating a new habitat. Tragically, this burn led to the death of a 29-year-old wildlife technician who was dedicated to warbler restoration. Forest Service employee Rita Halbeisen, local Michiganders skeptical of the resources put toward protecting the warbler, and the family of James Swiderski (the man killed in the fire), weigh in on how far we...

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 overlooked second act of life.  

Special than...

This week: the story of astrophysicist Charity Woodrum. Charity is an extragalactic astronomer who studies the life and death of galaxies, why some galaxies burn bright and others dim and sputter out. And in the midst of an unthinkable grief in her personal life, she discovers something in the sky – a new kind of light that would guide her path forward. 

Special thanks to Megan Stielstra, Jad Abumrad, Michael Woodrum, Gina Vivona, and Clair Reilly-Roe.

EPISODE CREDITS: 
Reported by - Lulu Miller
Produced by - Jessica Yung
Fact-checking by - Diane Kelly

This week, two conversations from the archives about parts of the world that are imperceptible to us, verging on almost unthinkable. We start with a moment of uncertainty in physics. Inspired by an essay written by physicist and novelist Alan Lightman, called The Accidental Universe (https://zpr.io/4965dUdNqtpQ), taken from a book of the same name. Former Radiolab co-host Robert Krulwich pays a visit to Brian Greene to ask if the latest developments in theoretical physics spell a crisis for science. He finds that we've reached the limit of what we can see and test, and we’re le...

Back in 2017 our colleagues at More Perfect gathered a room full of people together to debate a straight forward question: Can free speech go too far? Today, eight years have passed and plenty has changed, but this question feels alive as ever. 

And so we’re re-airing More Perfect’s The Hate Debate. Taped live at WNYC's Jerome L. Greene Performance Space, Elie Mystal, Ken White and Corynne McSherry duke it out over whether the first amendment needs an update in our digital world. 

Special thanks to Elaine Chen, Jennifer Keeney Sendrow, and the entire Greene...

This hour of Radiolab, former co-hosts Jad and Robert set out in search of order and balance in the world around us, and ask how symmetry shapes our very existence -- from the origins of the universe, to what we see when we look in the mirror.

Along the way, we look for love in ancient Greece, head to modern-day Princeton to peer inside our brains, and turn up an unlikely headline from the Oval Office circa 1979.

EPISODE CITATIONS:

Videos - 

Back in the day, when we first aired this episode, t...

Have you heard On the Media’s Peabody-winning series The Divided Dial? 

It’s awesome and you should, and now you will. In this episode they tell the story of shortwave radio: the way-less-listened to but way-farther-reaching cousin of AM and FM radio. The medium was once heralded as a utopian, international, and instantaneous mass communication tool — a sort of internet-before-the-internet. 

But, like the internet, many people quickly saw the power of this new technology and found ways to harness it. State leaders turned it into a propaganda machine, weaponizing the airwaves to try and shape po...

Jilted lovers and disrupted duck hunts provide a very odd look into the soul of the US Constitution.

What does a betrayed lover’s revenge have to do with an international chemical weapons treaty? More than you’d think. From poison and duck hunts to our feuding fathers, we step into a very odd tug of war between local and federal law.

When Carol Anne Bond found out her husband had impregnated her best friend, she took revenge. Carol's particular flavor of revenge led to a US Supreme Court case that puts into question a part...

This is episode five of Swimming with Shadows: A Radiolab Week of Sharks.

Today, the strange, squirmy magic behind how sharks make more sharks. Drills. Drama. Death. Even a coliseum of baby sharks duking it out inside mom’s womb. And a man on a small island in the Mediterranean trying, against all odds, to give baby sharks a chance in a little plastic aquarium in his living room. Can a human raise a shark? And if so, what good is that for sharks? And for us? Doo doo doo doo doo doo.

Special thanks to...

This is episode four of Swimming with Shadows: A Radiolab Week of Sharks.

Alison Kock was working at a car wash in Cape Town when she made a discovery that completely changed the course of her life. Inside a customer’s trunk, she found photographs of white sharks flying so high above the water they looked like airplanes. She followed those photographs to False Bay, “the Great White Capital of the World.” These sharks, in this place, are the apex of apex predators. Or they were. Until they mysteriously began to disappear.

Special thanks to Kathry...

This is episode three of Swimming with Shadows: A Radiolab Week of Sharks.

Today, we take a trip across the world, from the south coast of Australia to … Wisconsin. Here, scientists are scouring shark blood to find one of nature’s hidden keys, a molecular superhero that might unlock our ability to cure cancer: shark antibodies. They’re small. They’re flexible. And they can fit into nooks and crannies on tumors that our antibodies can’t.

We journey back 500 million years to the moment sharks got these special powers and head to the underground labs trans...

This is episode two of Swimming with Shadows: A Radiolab Week of Sharks.

Jaws spawned a thousand imitators: sharks in tornados, sharks in avalanches, sharks that battle giant octopuses. Hollywood has officially turned sharks into monsters of every shape and size. And yet, somehow, there will always be more.

But drop below the surface, into the cold, quiet blue, and another creature appears. One that has survived mass extinctions, outlasted ancient predators and pre-dates Mount Everest, the existence of trees, even the rings of Saturn. A shark that is somehow even more remarkable than sharks...

Episode one of Swimming with Shadows: A Radiolab Week of Sharks.

Rodney Fox went into the ocean one summer day in 1963. He came out barely alive, his body torn apart by a great white shark. At the time, it was one of the worst shark attacks ever survived.

After he recovered, he was pulled back into the shadowy world he feared most. Again and again and again. That shark attack left behind a question that still lingers, for Rodney, and for all of us: When you can’t see the thing that scares you, what ki...

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 Ju...

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...

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...

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 ou...

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 Duration: 00:32:42

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.

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 na...

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 w...

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...

In honor of our Earth, on her day, we have two stories about the overlooked, ignored, and neglected parts of nature. In the first half, we learn about an epic battle that is raging across the globe every day, every moment. It's happening in the ocean, and your very life depends on it. In the second half, we make an earnest, possibly foolhardy, attempt to figure out the dollar value of the work of bats and bees as we try to keep our careful calculations from falling apart in the face of the realities of life, and love, and...

A couple years ago, an entomologist named Martha Weiss got a letter from a little boy in Japan saying he wanted to replicate a famous study of hers. We covered that original study on Radiolab more than a decade ago in an episode called Goo and You – check it out here – and in addition to revealing some fascinating secrets of insect life, it also raises big questions about memory, permanence and transformation. The letter Martha received about building on this study set in motion a series of spectacular events that advance her original science and show how science works when...

In an episode first aired in 2012, Lulu Miller introduces us to Jeff Lockwood, a professor at the University of Wyoming, who spent a part of his career studying a particularly ferocious set of insects: Gryllacrididae. Or, as Jeff describes them, "crickets on steroids." They have crushingly strong, serrated jaws, and they launch all-out attacks on anyone who gets in their way--whether it's another cricket, or the guy trying to take them out of their cages.

In order to work with the gryllacridids, Jeff had to figure out how to out-maneuver them. And as he devised ways to...

Earth can sustain life for another 100 million years, but can we?

In this episode, we partnered with the team at Planet Money to take stock of the essential raw materials that enable us to live as we do here on Earth—everything from sand to copper to oil— and tally up how much we have left. Are we living with reckless abandon? And if so, is there even a way to stop? This week, we bring you a conversation that’s equal parts terrifying and fascinating, featuring bird poop, daredevil drivers, and some staggering back-of-the-envelope math.

E...

We all think we know the story of pregnancy. Sperm meets egg, followed by nine months of nurturing, nesting, and quiet incubation. this story isn’t the nursery rhyme we think it is. In a way, it’s a struggle, almost like a tiny war. And right on the front lines of that battle is another major player on the stage of pregnancy that not a single person on the planet would be here without. An entirely new organ: the placenta.

In this episode, which we originally released in 2021, we take you on a journey through the 270-day...

It’s easy to take growth for granted, for it to seem expected, inevitable even. Every person starts out as a baby and grows up. Plants grow from seeds into food. The economy grows. That stack of mail on your table grows. But why does anything grow the way that it does? In this hour, we go from the Alaska State Fair, to a kitchen in Berkeley, to the deep sea, to ancient India, to South Korea, and lots of places in between, to investigate this question, and uncover the many forces that drive growth, sometimes wondrous, sometimes terrifying, an...

In 2017 our sister show, More Perfect aired an episode all about RBG, In September of 2020, we lost Supreme Court Justice Ruth Bader Ginsburg to the annals of history. She was 87. Given the atmosphere around reproductive rights, gender and law, we decided to re-air this More Perfect episode dedicated to one of her cases. Because it offers a unique portrait of how one person can make change in the world. 

This is the story of how Ginsburg, as a young lawyer at the ACLU, convinced an all-male Supreme Court to take discrimination against women seriously - using a c...

Today we uncover an invisible killer hidden, for over a hundred years, by reasonable disbelief. Science journalist extraordinaire Carl Zimmer tells us the story of a centuries-long battle of ideas that came to a head, with tragic consequences, in the very recent past. His latest book, called Airborne, details a  largely forgotten history of science that never quite managed to get off the ground. Along the way, Carl helps us understand how we can fail, over and over again, to see a truth right in front of our faces. And how we finally came around thanks to scientific evidence h...

Today, a story that starts small and private, with one woman alone in her bathroom, as she makes a quiet, startling discovery about her own body. But that small, private moment grows and grows, and pretty soon it becomes something so big that it has impacted the life of every person reading this right now… and all that without the woman ever even knowing the impact she had. We originally aired this story back in 2010, but we thought we’d bring it back today, as questions about bodily autonomy circle with renewed force.

EPISODE CREDITS: 
Reported by...

Annie McEwen went to a mountain in Pennsylvania to help catch some migratory owls. Then Scott Weidensaul peeled back the owl’s feathery face disc, so that she could look at the back of its eyeball. No owls were harmed in the process, but this brief glimpse into the inner workings of a bird sent her off on a journey to a place where fleshy animal business bumps into the mathematics of subatomic particles. With help from Henrik Mouristen, we hear how one of the biggest mysteries in biology might finally find an answer in the weird world of qu...

In this episode, first aired in 2012, we have two stories of brains pushed off-course. We relive a surreal day in the life of a young researcher hijacked by her own brain, and hear from a librarian experiencing a bizarre and mysterious set of symptoms that she called “gravitational anarchy.”

Special thanks to Sarah Montague and Ellen Horn, as well as actress Hope Davis, who read Rosemary Morton’s story. And the late Berton Roueché, who wrote that story down. 

EPISODE CREDITS: 

Produced by - Brenna Farrell
Original music and sound design contributed by - Tim...

We eat apples in the summer and enjoy bananas in the winter. When we do this, we go against the natural order of life which is towards death and decay. What gives? This week, Latif Nasser spoke with Nicola Twilley, the author of Frostbite: How Refrigeration Changed Our Food, Our Planet, and Ourselves. Twilley spent over a decade reporting about how we keep food alive as it makes its way from the farm to our table. This conversation explores the science of cold, how fruits hold a secret to eternal youth, and how the salad bag, of all things...

In an episode first reported in 2017, we bring you a look up and down the US nuclear chain of command to find out who gets to authorize their use and who can stand in the way of Armageddon. 

President Richard Nixon once boasted that at any moment he could pick up a telephone and - in 20 minutes - kill 60 million people.  Such is the power of the US President over the nation’s nuclear arsenal.  But what if you were the military officer on the receiving end of that phone call? Could you refuse the order?

In...

We fall down the looking glass with Sönke Johnsen, a biologist who finds himself staring at one of the darkest things on the planet. So dark, it’s almost like he’s holding a blackhole in his hands. On his quest to understand how something could possibly be that black, we enter worlds of towering microscopic forests, where gold becomes black, the deep sea meets the moon, and places that are empty suddenly become full. 

Corrections/Clarifications:
In this episode, dragonfish are described as having teeth that slide back into their skull; that is the fangto...

In an episode we first aired in 2018, we asked the question, do you really need a brain to sense the world around you? To remember? Or even learn? Well, it depends on who you ask. Jad and Robert, they are split on this one. Today, Robert drags Jad along on a parade for the surprising feats of brainless plants. Along with a home-inspection duo, a science writer, and some enterprising scientists at Princeton University, we dig into the work of evolutionary ecologist Monica Gagliano, who turns our brain-centered worldview on its head through a series of clever experiments that...

In an episode first reported in 2017, we bring you what may be, maybe the greatest gift one person could give to another. 

You never know what might happen when you sign up to donate bone marrow. You might save a life… or you might be magically transported across a cultural chasm and find yourself starring in a modern adaptation of the greatest story ever told.

One day, without thinking much of it, Jennell Jenney swabbed her cheek and signed up to be a donor.  Across the country, Jim Munroe desperately needed a miracle, a one-in-eight-million conn...

This holiday season, we want to take you on a trip around the heavens.

First, co-host Latif Nasser, with the help of Nour Raouafi, of NASA, and an edge-cutting piece of equipment, explain how we may finally be making good on Icarus’s promise. Then, co-host Lulu Miller and Ada Limón talk about how a poet laureate goes about writing an ode to one of Jupiter’s moons.

And one more thing! It is almost your last chance to make your mark on the heavens. Radiolab and The International Astronomical Union’s Quasi Moon Naming...

The early bird gets the worm. What goes around, comes around. It’s always darkest just before dawn. We carry these little nuggets of wisdom—these adages—with us, deep in our psyche. But recently we started wondering: are they true? Like, objectively, scientifically, provably true?

So we picked a few and set out to fact check them. We talked to psychologists, neuroscientists, runners, a real estate agent, skateboarders, an ornithologist, a sociologist and an astrophysicist, among others, and we learned that these seemingly simple, clear-cut statements about us and our world, contain whole universes of beautiful, vexing...

Back in 2012, when we were putting together our live show In the Dark, Jad and Robert called up Dave Wolf to ask him if he had any stories about darkness. And boy, did he. Dave told us two stories that became the finale of our show.

Back in late 1997, Dave Wolf was on his first spacewalk, to perform work on the Mir (the photo to the right was taken during that mission, courtesy of NASA.). Dave wasn't alone -- with him was veteran Russian cosmonaut Anatoly Solovyev. (That's a picture of Dave giving Anatoly a hug on...

In August of 1973, Jan-Erik Olsson walked into the lobby of a bank in central Stockholm. He fired his submachine gun at the ceiling and yelled “The party starts now!” Then he started taking hostages. For the next six days, Swedish police and international media would tie themselves in knots trying to understand what seemed to them a sordid attachment between captor and captives. And this fixation, later pathologized as “Stockholm Syndrome,” would soon spread across the globe, becoming an easy, often flippant explanation for why people—especially women—in crisis behave in ways outsiders can’t understand. But what if we got the...

In today’s story, which originally aired in 2014, we meet a very special cylinder. It's the gold standard (or, in this case, the platinum-iridium standard) for measuring mass. For decades it's been coddled and cared for and treated like a tiny king. But, as we learn from writer Andrew Marantz, things change—even things that were specifically designed to stay the same.

Special thanks to Ken Alder, Ari Adland, Eric Perlmutter, Terry Quinn and Richard Davis.

And to the musical group, His Majestys Sagbutts & Cornetts, for the use of their song “Horses and Hounds.”

We...

When he rounded them up, he had a 100.

A few months ago, Wendy Zukerman invited our own Latif Nasser to come on her show, and, of course, he jumped at the chance. 

Laughter ensued, as they set off to find the "The Funniest Joke in the World." When you just Google something like that, the internet might serve you, "What has many keys but can't open a single lock??” (Answer: A piano). So they had to dig deeper. According to science. And for this quest they interviewed a bunch of amazing comics including Tig Notaro, Ada...

It's hard to start a conversation with a stranger—especially when that stranger is, well, different. He doesn't share your customs, celebrate your holidays, watch your TV shows, or even speak your language. Plus he has a blowhole.

In this episode, which originally aired in the summer of 2014, we try to make contact with some of the strangest strangers on our little planet: dolphins. Producer Lynn Levy eavesdrops on some human-dolphin conversations, from a studio apartment in the Virgin Islands to a research vessel in the Bermuda Triangle.

We have some exciting news! In the “Zooz...

As we grow up, there are little windows of time when we can learn very, very fast, and very, very deeply. Scientists call these moments, critical periods. Real, neurological, biological states when our brain can soak up information like a sponge. Then, these windows of learning close. Locking us in to certain behaviors and skills for the rest of our lives. But … what if we could reopen them? Today, we consider a series of discoveries that are reshaping our understanding of when and how we can learn. And what that could mean for things like PTSD, brain disease, or st...

In an episode we first aired in 2014, we meet a man named Dennis Conrow, who was stuck. After a brief stint at college, he’d spent most of his 20’s back home with his parents, sleeping in his childhood room. And just when he finally struck out on his own, fate intervened. He lost both his parents to cancer. So Dennis was left, back in the house, alone. Until one night when a group of paranormal investigators showed up at his door and made him realize what it really means for a house, or a man, to be haunted. 
...

As the US Presidential Election nears, Radiolab covers the closest we ever came to abolishing the Electoral College.

In the 1960s, then-President Lyndon Johnson approached an ambitious young Senator known as the Kennedy of the Midwest to tweak the way Americans elect their President. The more Senator Birch Bayh looked into the electoral college the more he believed it was a ticking time bomb hidden in the constitution, that someone needed to defuse. With overwhelming support in Congress, the endorsement of multiple Presidents, and polling showing that over 80% of the American public supported abolishing it, it looked...

Back in 2018, when this episode first aired, there was a feeling that democracy was on the ropes.  In the United States and abroad, citizens of democracies are feeling increasingly alienated, disaffected, and powerless.  Some are even asking themselves a question that feels almost too dangerous to say out loud: is democracy fundamentally broken?  

Today on Radiolab, we ask a different question: how do we fix it?  We scrutinize one proposed tweak to the way we vote that could make politics in this country more representative, more moderate, and most shocking of all, more civil.  Could this one surpri...

In 1987, Gary Hart was a young charismatic Democrat, poised to win his party’s nomination and possibly the presidency. Many of us know the story of what happened next, and even if you don’t, it’s a familiar tale. Back in 2016, we examined how, when this happened, politicians and political reporters found themselves in uncharted territory. And with help from author Matt Bai, we looked at how the events of that May shaped the way we cover politics, and expanded our sense of what's appropriate when it comes to judging a candidate.

In the wake of the 20...

As dead as they seem, tree stumps are hubs of life and relationships. 

Co-host Lulu Miller is back with another season of her hit spinoff show Terrestrials, and to celebrate, we’re sharing the first episode with you. From stumps to snags, dead wood provides habitat for rodents, falcons, insects, and even humans. Stumps hold together the forest floor, give hunting perches to birds of prey in flatlands, prevent erosion and the encroachment of invasive species, usher in sunlight, provide nutrients, store renewable fuel, and hold onto stories human beings might have forgotten. Without these ghosts of tre...

A mile under the ocean, we get to watch an octopus perform a heroic act of heart and determination.

First aired back in 2020, this episode follows the story of an octopus living one mile under the ocean as she performs a heroic act of heart and determination.

In 2007, Bruce Robison’s robot submarine stumbled across an octopus settling in to brood her eggs. It seemed like a small moment. But as he went back to visit her, month after month, what began as a simple act of motherhood became a heroic feat that has never be...

Today we follow a sleuth who has spent over a decade working to solve an epic mystery hiding in plain historical sight: did anyone survive the eruption of Mount Vesuvius in 79AD? 

Tired of hearing the conventional narrative that every Pompeiian perished without any evidence to back it up, Classicist Steven Tuck decides to look into it himself. Although he is nearly two millennia late to ground zero, he uses all the available evidence to reimagine the disaster from the perspective of the people on the ground. Could anyone have survived the volcano? If they did, could t...

This episode first aired back in December of 2013, and at the start of that new year, the team was cracking open fossils, peering back into ancient seas, and looking up at lunar skies only to find that a year is not quite as fixed as we thought it was.

With the help of paleontologist Neil Shubin, reporter Emily Graslie and the Field Museum's Paul Mayer we discover that our world is full of ancient coral calendars. Each one of these sea skeletons reveals that once upon a very-long-time-ago, years were shorter by over forty days. And astrophysicist...

One man secretly hands off more and more of his life to an AI voice clone.

Today, we feature veteran journalist Evan Ratliff who - for his new podcast Shell Game - decided to slowly replace himself bit by bit with an AI voice clone, to see how far he could actually take it. Could it do the mundane phone calls he’d prefer to skip? Could it get legal advice for him? Could it go to therapy for him? Could it parent his kids? Evan feeds his bot the most intimate details about his life, and le...

First aired back in 2017, here’s a show of questions and, sometimes, answers. Cause, we get a lot of questions. Like, A LOT of questions. Tiny questions, big questions, short questions, long questions. Weird questions. Poop questions. We get them all.

And over the years, as more and more of these questions arrived in our inbox, what happened was, guiltily, we put them off to the side, in a bucket of sorts, where they just sat around, unanswered. But now, we’re dumping the bucket out.

Today, our producers pick up a few of the ques...

February 1976. A flight out of California turned catastrophic when it crashed into a farm in rural Nebraska. What happened that night at the local hospital, and crucially, what went wrong, would inspire a global sea-change in how emergency rooms operate and fundamentally alter the way doctors think in a crisis.

Special thanks to Jody and Jay Upright, Heather Talbott, Dr. Ron Simon, Dr. John Sutyak, Dr. Paul Collicott, Irvene Hughe, Maimonides Medical Center, Karl Sukhia and Vanya Zvonar.

We have some exciting news! In the “Zoozve” episode, Radiolab named its first-ever quasi-moon, and now it's your...

Given that we’re all gearing up for the Presidential race, and how gun rights and regulations are almost always centerstage during these times. Today, we’re re-releasing a More Perfect episode that aired just after the October 2017 Las Vegas shooting. It is an episode that attempts to make sense of our country’s fraught relationship with the Second Amendment.

For nearly 200 years of our nation’s history, the Second Amendment was an all-but-forgotten rule about the importance of militias. But in the 1960s and 70s, a movement emerged — led by Black Panthers and a recently-repositioned NRA — that insiste...

Two scenes. In the first, a doctor gets a call — the hospital she works at is having an outbreak of unknown origin, in the middle of the worst wildfire season on record. In the second, an ecologist stands in a forest, watching it burn. Through very different circumstances, they both find themselves asking the same question: is there something in the smoke? This question will bring them together, and reveal – to all of us – a world we never saw before. 

This is the first episode in an ongoing series hosted by Molly Webster, in conversation with scientists and sci...

We had a question back in 2007, about a thing every creature on the planet does--from giant humpback whales to teeny fruit flies. Why do we all sleep? What does it do for us, and what happens when we go without? We take a peek at iguanas sleeping with one eye open, get in bed with a pair of sleep-deprived new parents, and eavesdrop on the uneasy dreams of rats. 

We have some exciting news! In the “Zoozve” episode, Radiolab named its first-ever quasi-moon, and now it's your turn! Radiolab has teamed up with The International Astronomical Union to la...

High above the banks of the Mississippi river, a nest holds the secret life of one of America’s most patriotic creatures. Their story puzzles scientists, reinforces indigenous wisdom, and wows audiences, all thanks to a park ranger named Ed, and a well-placed webcam. If you want to spoil the mystery, here ya go: it’s a bald eagle. Actually, it’s three bald eagles. A mama bird and daddies make a home together for over a decade and give new meaning to our national symbol. 

Learn about the storytellers, listen to music, and dig deeper into the sto...

To celebrate the imminent start of the Summer Olympic Games in Paris, France we have an episode originally reported in 2016. No matter what sport you play, the object of the game is to win. And that’s hard enough to do. But we found a match where four top athletes had to do the opposite in one of the most high profile matches of their careers. Thanks to a quirk in the tournament rules, their best shot at winning was … to lose. 

This week, in honor of the 2024 Summer Olympics, we are rerunning a story from 2016 in which...

We get it… the world feels too bleak and too big for you to make a difference. But there is one thing - one simple tangible thing - you can do to make all the difference in the world to someone, possibly even a loved one, at arguably the worst moment of their life.

Statistics show that 1 out of every 5 people on earth will die of heart failure. Cardiac arrests can happen anywhere, anytime - in your bed, on the street, on your honeymoon. And every minute that passes after your heart stops beating, your chances of su...

First aired back in 2013, we originally released this episode to celebrate the 80th birthday of one of our favorite human beings, Oliver Sacks. To celebrate, his good friend, and our former co-host Rober Krulwich, asks the good doctor to look back, and explain how thousands of worms and a motorbike accident led to a brilliant writing career.

We have some exciting news! In the “Zoozve” episode, Radiolab named its first-ever quasi-moon, and now it's your turn! Radiolab has teamed up with The International Astronomical Union to launch a global naming contest for one of Earth’s quasi-moons. This i...

In 1995, a tragic fire in Pittsburgh set off a decades-long investigation that sent Greg Brown Jr. to prison. But, after a series of remarkable twists, Brown found himself contemplating a path to freedom that involved a paradoxical plea deal—one that peels back the curtain on the criminal justice system and reveals it doesn’t work the way we think it does. 

Special thanks to John Lentini, Amanda Gillooly, Fred Buckner, Debbie Steinmeyer, Marissa Bluestine, Jason Hazlewood, Meredith Kennedy, Kristen Vermilya, Joshua Ceballos and Lauren Cooperman.

We have some exciting news! In the “Zoozve” episode, Radiolab...

People have been doing the square dance since before the Declaration of Independence. But does that mean it should be THE American folk dance? That question took us on a journey from Appalachian front porches, to dance classes across our nation, to the halls of Congress, and finally a Kansas City convention center. And along the way, we uncovered a secret history of square dancing that made us see how much of our national identity we could stuff into that square, and what it means for a dance to be of the people, by the people, and for the...

Close your eyes and imagine a red apple. What do you see? Turns out there’s a whole spectrum of answers to that question and Producer Sindhu Gnanasambandan is on one far end. In this episode, she explores what it means to see – and not see – in your mind.

Special thanks to Kim Nederveen Pieterse, Nathan Peereboom, Lizzie Peabody, Kristin Lin, Jo Eidman, Mark Nakhla, Andrew Leland, Brian Radcliffe, Adam Zeman, John Green, Craig Venter, Dustin Grinnell, and Soraya Shockley.

We have some exciting news! In this “Zoozve” episode, Radiolab named its first-ever quasi-moon, and now it's y...

From a suburban sidewalk in southern California, Jad and Robert witness the carnage of a gruesome turf war. Though the tiny warriors doing battle clock in at just a fraction of an inch, they have evolved a surprising, successful, and rather unsettling strategy of ironclad loyalty, absolute intolerance, and brutal violence.

David Holway, an ecologist and evolutionary biologist from UC San Diego, takes us to a driveway in Escondido, California where a grisly battle rages. In this quiet suburban spot, two groups of ants are putting on a chilling display of dismemberment and death. According to David...

They promised to change you. They ended up changing all of us.

On July 20, 1969 humanity watched as Neil Armstrong stepped foot on the moon. It was the dazzling culmination of a decade of teamwork, a collective global experience unlike anything before or since, a singular moment in which every human being was invited to feel part of something larger than themself. There was however, one man who was left out.   

This week on Radiolab we explore what it means to be together and - of course - the cassette tapes that changed it. 

...

Chimps. Bonobos. Humans. We're all great apes, but that doesn’t mean we’re one happy family.

This episode, a mashup of content stretching all the way back to 2010, asks the question, is cross-species co-habitation an utterly stupid idea? Or might it be our one last hope as more and more humans fill up the planet? A chimp named Lucy teaches us the ups and downs of growing up human, and a visit to The Great Ape Trust in Des Moines, Iowa highlights some of the basics of bonobo culture (be careful, they bite).

EPISODE CITA...

A selection of short flights of fact and fancy performed live on stage.

Usually we tell true stories at this show, but earlier this spring we were invited to guest host a live show called Selected Shorts, a New York City institution that presents short fiction performed on stage by great actors (you’ll often find Tony, Emmy and Oscars winners on their stage). We treated the evening a bit like a Radiolab episode, selecting a theme, and choosing several stories related to that theme. The stories we picked were all about “flight” in one way or anothe...

Remembering is a tricky, unstable business. This hour: a look behind the curtain of how memories are made...and forgotten.

The act of recalling in our minds something that happened in the past is an unstable and profoundly unreliable process--it’s easy come, easy go as we learn how true memories can be obliterated, and false ones added. Then, Oliver Sacks joins us to tell the story of an amnesiac whose love for his wife and music transcend his 7-second memory.

Our newsletter comes out every Wednesday. It includes short essays, reco...

An ode to the small, the banal, the overlooked things that make up the fabric of our lives.

Most of our stories are about the big stuff: Important or dramatic events, big ideas that transform the world around us or inspire conflict and struggle and change. But most of our lives, day by day or hour by hour, are made up of … not that stuff. Most of our lives are what we sometimes dismissively call “small potatoes.” This week on Radiolab, Heather Radke challenges to focus on the small, the overlook, the everyday … and find out what happens...

In an episode we last featured on our Radiolab for Kids Feed back in 2020, and in honor of its blocking out the Sun for a bit of us for a bit last week, in this episode, we’re gonna talk more about the moon. According to one theory, (psst listen to The Moon Itself if you want to know more) the moon formed when a Mars-sized chunk of rock collided with Earth, the moon coalesced out of the debris from that impact. And it was MUCH closer to Earth than it is today. This idea is taken to its fa...

There’s a total solar eclipse coming. On Monday, April 8, for a large swath of North America, the sun will disappear, in the middle of the day. Everywhere you look, people are talking about it. What will it feel like when the sun goes away? What will the blocked-out sun look like? But all this talk of the sun got us thinking: wait, what about the moon? The only reason this whole solar eclipse thing is happening is because the moon is stepping in front of the sun. So in today’s episode, we stop treating the moon like a bi...

As a treat for the first palindrome date of the calendar year 2024, 4/2/24, (for those who use U.S. formatting of dates anyway), we are releasing a special audio palindrome. A piece that plays the same forward and backward. It’s called “Drawn Onward” and it comes from the producers Alan Goffinski and Sarita Bhatt. It originally aired on the wonderful BBC show Short Cuts which curates fresh, experimental, adventurous audio journeys. 

Special thanks to Alan Goffinski, Sarita Bhatt, Josie Long, Eleanor McDowall, BBC Short Cuts

EPISODE CREDITS: 

Reported by - Alan Goffinski, Sarita Bhatt Duration: 00:13:33

This is a segment we first aired back in 2011. In it, we hear a story of a very different kind of lost and found. Alan Lundgard, a college art student, fell in love with a fellow art student, Emilie Gossiaux. Nine months after Alan and Emilie made it official, Emilie's mom, Susan Gossiaux, received a terrible phone call from Alan. Together, Susan and Alan tell Jad and Robert about the devastating fork in the road that left Emilie lost in a netherworld, and how Alan found her again.

Then, at the end of the episode, and a...

On today’s show, we’re excited to share an episode from our friends at the podcast Throughline. 

Sometimes, the most dangerous and powerful thing a person can do is to stand up not against their enemies, but against their friends. As the United States heads into what will likely be another bitter and divided election year, there will be more and more pressure to stand with our in-groups rather than our consciences.

So the Throughline team decided to tell some of the stories of people who have stood up to that kind of pressure. Some...

What happens when you combine an axe-wielding microbiologist and a disease-obsessed historian? A strange brew that's hard to resist, even for a modern day microbe.

In the war on devilish microbes, our weapons are starting to fail us.  The antibiotics we once wielded like miraculous flaming swords seem more like lukewarm butter knives.

But today we follow an odd couple to a storied land of elves and dragons. There, they uncover a 1000-year-old secret that makes us reconsider our most basic assumptions about human progress and wonder: What if the only way forward is backward? Duration: 00:31:03