Radiolab is on a curiosity bender. We ask deep questions and use investigative journalism to get the answers. A given episode might whirl you through science, legal history, and into the home of someone halfway across the world. The show is known for innovative sound design, smashing information into music. It is hosted by Lulu Miller and Latif Nasser.
“What is the sweetest thing in the world?” After co-host Latif Nasser’s sons ask him this deceptively simple question, he goes on a quest to find it. Is it a West African Katemfe berry? Or an industrial sugar substitute cooked up in a lab? Or an ingredient hiding in plain si...
When Kelley Benham and her husband Tom French finally got pregnant, after many attempts and a good deal of technological help, everything was perfect. Until it wasn't. Their story raises questions that, until recently, no parent had to face… and that are still nearly impossi...
We’re coming up on the 25th anniversary of the 9/11 attacks, and it had us thinking about an episode we produced in 2014. It’s the story of one sentence, written in the hours after September 11th, 2001, that has led to the longest war in U.S. history. We examine how just 60 ...
The world lost a legend recently, and we wanted in some small way to pay tribute to the great Dolly Parton. So we’re playing you an episode from a series we had a small part in back in 2017, Dolly Parton’s America.
The series kicked off with a simple question: How did...
The greatest mysteries have a shadowy figure at the center—someone who sets things in motion and holds the key to how the story unfolds. In epidemiology, this central character is known as Patient Zero—the case at the heart of an outbreak. This hour, Radiolab digs up an epis...
In 2016, Chris Bell, a ranger with New Zealand’s Department of Conservation, was the sole human inhabitant of a small island off the west coast of the country, called Mana Island. He was there to take care of the island’s fragile and recovering ecosystem, including a colony ...
It was the early '80s, the height of the Cold War, when something strange began happening off the coast of Sweden. The navy reported a mysterious sound deep below the surface of the ocean. Again, and again, and again they would hear it near their secret military bases, in th...
When no one seems to be listening, how far do you go to be heard?
In December 2008, George W. Bush made a surprise visit to Baghdad for a press conference. And at the very end of his remarks, a shoe came flying past his head.
It was “the shoe heard around the world,” a...
Several years ago, in 2016, we told a story about Amy Pearl. For as long as she could remember, Amy loved meat in all its glorious cuts and marbled flavors. And then one day, for seemingly no reason, her body wouldn’t tolerate it. No steaks. No brisket. No weenies. It ...
In an episode we first ran back in 2019, we explore how a sunken nuclear submarine, a crazy billionaire, and a mechanical claw gave birth to a phrase that has hounded journalists and lawyers for 40 years and embodies the tension between the public’s desire for transparency a...
Lauren Brown gets goosebumps. A lot. Sometimes several times a day. When her partner, writer Carmen Maria Machado, noticed it...she couldn't stop thinking about it. Why does she get them in so many different situations? What’s happening in her body and what does it mean? We ...
Back in the 1950s, facing the threat of nuclear annihilation, federal officials sat down and pondered what American life would actually look like after an atomic attack. They faced a slew of practical questions like: Who would count the dead and where would they build the re...
Back in 2017, reporters Kristen Clark and David Conrad came to us with a story that dug into the difficult and often dark places discrimination creates. We start in Venice, Italy, where they meet gondolier Alex Hai. On the winding canals in the hidden parts of Venice, we lea...
Radiolab
• Storytelling, Hormones, Sex hormones, Menstrual cycle, Men’s health, Women’s health, Mental Health, Philosophy, Neuroscience, Brain, Health
After reading something that said her menstrual cycle changes her brain each month, Senior Correspondent Molly Webster goes on a reporting mission to see if that’s true, and, if so, how.
This journey into sex hormones and the brain involves females and males, and exacting se...
In honor of Father's Day, here is a family friendly bonus episode from our kids' podcast Terrestrials.
What does it really mean to be a dad? In the animal world, fathers have long been painted as aggressive or absent. At best providers and protectors, but certainly no...
A little while back, our friends over at On the Media released a gripping and immersive reporting series about FEMA, the agency that is supposed to be there for all of us in the wake of disaster. In American Emergency (https://zpr.io/MtrUmJU3yEMW), OTM investigates how the a...
One morning, Oliver Sipple went out for a walk. A couple hours later, to his own surprise, he saved the life of the President of the United States. In a story we reported back in 2017, we explain how in the days that followed, Sipple’s split-second act of heroism turned into...
A couple summers ago, Radiolab reporter Alex Neason got out of the shower and almost stepped on her worst nightmare: an American Cockroach. It was flipped onto its back, struggling, and for a split second, Alex swears she felt the spiny tickle of its legs on the underside of...
This episode makes three earnest, possibly foolhardy, attempts to put a price on the priceless. We figure out the dollar value for an accidental death, another day of life, and the work of bats and bees as we try to keep our careful calculations from falling apart in the fac...
For most of human history, people went about their daily lives with a worm or two (or fifty) in their guts. Only in the past century, with pharmaceuticals and sanitation practices, have we made significant strides towards deworming the whole of humanity. And that’s typically...
With all of the black-and-white moralizing in our world today, we decided to bring back an old show from 2011 about the little bit of bad that's in all of us...and the little bit of really, really bad that's in some of us.
Cruelty, violence, badness... in this ep...
In 2017, Wayne Hsiung and a crew of animal rights activists from Direct Action Everywhere broke into a Utah pig farm run by Smithfield Foods, one of the largest pork distributors in the world. They were there to capture video of what they say were thousands of mistreated and...
For much of history, tree canopies were pretty much completely ignored by science. It was as if researchers said collectively, "It's just going to be empty up there, and we've got our hands full studying the trees down here! So why bother?"
But then around the mid-1980s, a f...
There’s something rotten in the cows of Denmark. And Minnesota. And Wisconsin. And Idaho. What could cause a previously thriving herd of majestic dairy cattle to stop drinking water and start drinking … urine? A Danish farmer calls a special investigator, who takes one look ...
In an episode first aired back in 2025 on our sister show, Terrestrials, we take you on a musical journey all about beavers. Few mammals have a bigger positive impact on the planet than the beaver. With its bright orange buck teeth, the creature is an expert engineer that br...
This week, in an episode we first aired in 2022, we flip the Disney story of life on its head thanks to a barrel of seawater, a 1970s era computer, and underwater geysers. It’s the chaos of life.
Latif, Lulu, and our Senior Producer Matt Kielty were all sitting on their own ...
Doctor and special correspondent Avir Mitra takes Executive Editor Soren Wheeler, plus a live studio audience, on a journey from the operating room to inside the body to the farm to the sewers and back again—searching for answers to an alarming threat to humanity’s existence...
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 in this episode, originally r...
If a species is horrible enough, do we have the right to kill it forever?
Seventy years ago, a nightmare parasite feasted on the live flesh of warm-blooded creatures in North America: the screwworm. That is, until a young scientist named Edward F. Knipling discovered a cruci...
In this episode, we consider a creature we often don’t think much about—the snail. And not just snails, but their sex lives. Which, as it turns out, is epic. There is persuasion and subterfuge, spaghetti penises and co-copulation. And this very surprising habit—erm kink—of m...
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