Radiolab

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 dis...

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...

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 rec...

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 ...

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 terrifyin...

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 ep...

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 invest...

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 Gin...

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 underst...

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 though...

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 Mouri...

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, ...

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...

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 offic...

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/Cl...

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 t...

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 an...

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 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 ornitholog...