Diane Van Deren is one of the best ultra-runners in the world, and it all started with a seizure. In this short, Diane tells us how her disability gave rise to an extraordinary ability.

It has now been 20 years since September 11th, 2001. So we’re bringing you a Peabody Award-winning story from our archives about one sentence, written in the hours after the attacks, that has led to the longest war in U.S. history. We examine how just 60 words of legal language have blurred the line between war and peace.

In the hours after the attacks of Sept. 11, 2001, a lawyer sat down in front of a computer and started writing a legal justification for taking action against those responsible. The language that he drafted and that President George W. Bush signed into law - called the Authorization for Use of Military Force (AUMF) - has at its heart one single sentence, 60 words long. Over the last decade, those 60 words have become the legal foundation for the "war on terror."

In this collaboration with BuzzFeed, reporter Gregory Johnsen tells us the story of how this has come to be one of the most important, confusing, troubling sentences of the last two decades. We go into the meetings that took place in the chaotic days just after 9/11, speak with Congresswoman Barbara Lee and former Congressman Ron Dellums about the vote on the AUMF. We hear from former White House and State Department lawyers John Bellinger & Harold Koh. We learn how this legal language unleashed Guantanamo, Navy Seal raids and drone strikes. And we speak with journalist Daniel Klaidman, legal expert Benjamin Wittes and Virginia Senator Tim Kaine about how these words came to be interpreted, and what they mean for the future of war and peace.

Finally, we check back in with Congresswoman Lee, and talk to Yale law professor and national security expert Oona Hathaway, about how to move on from the original sixty words.

Original episode produced by Matt Kielty and Kelsey Padgett with original music by Dylan Keefe. Update reported and produced by Sarah Qari and Soren Wheeler.

Special thanks to Brian Finucane.

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Multiple sclerosis, lupus, rheumatoid arthritis, even psoriasis — these are diseases in which the body begins to attack itself, and they all have one thing in common: they affect women more than men. Most autoimmune disorders do. And not just by a little bit, often by a lot; in some cases, as much as sixteen times more. But why? On today’s episode, we talk to scientists trying to answer that question. We go back 100 million years, to when our placenta first evolved and consider how it might have shaped our immune system. We dive deep into the genome, to stare at one of the most famous chromosomes: the X. And we also try to unravel a mystery — why is it that for some females, autoimmune disorders seemingly disappear during pregnancy?

This episode was reported by Molly Webster, and produced by Sindhu Gnanasambandan and Molly Webster. The Gonads theme song was written, performed, and produced by Majel Connery and Alex Overington.

Looking for something else to listen to? We suggest pairing “The Unsilencing” with “Everybody’s Got One,” an episode about an unknown super-organ that nobody on the planet would be here without: the placenta.

Want to learn more? You can …...check out a Montserrat Anguera XX study,...read Melissa Wilson’s placental, pregnancy hypothesis,…and get a primer on Rhonda Voskuhl’s estriol & Multiple Sclerosis work.

Support Radiolab by becoming a member of The Lab today.

We all think we know the story of pregnancy. Sperm meets egg, followed by nine months of nurturing, nesting, and quiet incubation. But 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 we take you on a journey through the 270-day life of this weird, squishy, gelatinous orb, and discover that it is so much more than an organ. It’s a foreign invader. A piece of meat. A friend and parent. And it’s perhaps the most essential piece in the survival of our kind.

This episode was reported by Heather Radke and Becca Bressler, and produced by Becca Bressler and Pat Walters, with help from Matt Kielty and Maria Paz Gutierrez. Additional reporting by Molly Webster.

Special thanks to Diana Bianchi, Julia Katz, Sam Behjati, Celia Bardwell-Jones, Mathilde Cohen, Hannah Ingraham, Pip Lipkin, and Molly Fassler.

Support Radiolab by becoming a member today at Radiolab.org/donate.

For cool new research on the placenta:

Check out Harvey’s latest paper published with Julia Katz.

Sam Behjati's latest paper on the placenta as a "genetic dumping ground".

In 2014, India’s Dutee Chand was a rising female track and field star, crushing national records. But then, that summer, something unexpected happened: she failed a gender test. And was banned from the sport. Before she knew it, Dutee was thrown into the middle of a controversy that started long before her, and continues on today: how to separate males and females in sport. First aired in 2018, Dutee and the story of female athletes in sport are back in the spotlight this week, at the Tokyo Olympics. Join us for an update on Dutee’s second Olympic games, and the continued role testosterone has in shaping who is on the track, and who is off.

This story was originally released as part of Gonads, a six-part series on the parts of us that make more of us. It is a companion piece to Gonads, episode 5: Dana.

This update was reported by Molly Webster, with reporting and producing by Sarah Qari.

"Dutee" was reported by Molly Webster, with co-reporting and translation by Sarah Qari. It was produced by Pat Walters, with production help from Jad Abumrad and Rachael Cusick. The Gonads theme was written, performed, and produced by Majel Connery and Alex Overington.

Special thanks to Geertje Mak, Maayan Sudai, Andrea Dunaif, Bhrikuti Rai, Joe Osmundson, and Payoshni Mitra. Plus, former Olympic runner Madeleine Pape, who is currently studying regulations around female, transgender, and intersex individuals in sport.

Radiolab is supported in part by Science Sandbox, a Simons Foundation initiative dedicated to engaging everyone with the process of science. And the Alfred P. Sloan Foundation, enhancing public understanding of science and technology in the modern world. More information about Sloan at www.sloan.org.

Support Radiolab today at Radiolab.org/donate.

If you’ve ever lost someone, or watched a medical drama in the last 15 years, you’ve probably heard of The Five Stages of Grief. They’re sort of the world’s worst consolation prize for loss. But last year, we began wondering… Where did these stages come from in the first place?

Turns out, Elisabeth Kübler-Ross. But the story is much, much more complicated than that. Those stages of grieving? They actually started as stages of dying. After learning that, producer Rachael Cusick tumbled into a year-long journey through the life and work of the incredibly complicated and misunderstood woman who single-handedly changed the way all of us face dying, and the way we deal with being left behind.

Special Note: Our friends over at Death Sex and Money have put together a very special companion to this story, featuring Rachael talking about this story with her grandmother. Check it out here.

This episode was reported and produced by Rachael Cusick, with production help from Carin Leong.

This story wouldn’t have been possible without the folks you heard from in the episode, and the many, many people who touched this story, including: Anne Adams, Andrew Aronson, Audrey Gordon, Barbara Hogenson, Basit Qari, Bill Weese, Bob McGan, Carey Gauzens, Clifford Edwards, Cristina McGinniss, Dorothy Holinger, Frank Ostaseski, Ira Byock, Jamie Munson, Jessica Weisberg, Jillian Tullis, Joanna Treichler, Jonathan Green, Ken Bridbord, Ladybird Morgan, Laurel Braitman, Lawrence Lincoln, Leah Siegel, Liese Groot, Linda Mount, Lyn Frumkin, Mark Kuczewski, Martha Twaddle, Peter Nevraumont, Rosalie Roder, Sala Hilaire, Stefan Haupt, Stephanie Riley, Stephen Connor, and Tracie Hunte.

Special thanks to all the folks who shared music for this episode, including:

Lisa Stoll, who shared her Alpine horn music with us for this episode. You can hear more of her music here.

Cliff Edwards, who shared original music from Deanna Edwards.

The Martin Hayes Quartet, who shared the last bit of music you hear in the piece that somehow puts a world of emotion into one beautiful tune.

And an extra special thank you to the folks over at Stanford University - Ben Stone, David Magnus, Karl Lorenz, Maren Monsen - the caretakers of Elisabeth’s archival collection who made it possible to rummage through their library from halfway across the country. You can read more about the collection here.

To learn more about Elisabeth and the folks who are furthering her work, you can visit the Elisabeth Kübler-Ross Foundation website here.

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A major development in the case of Guantanamo detainee Abdul Latif Nasser.

To listen to our series about him, go to theotherlatif.org.

In the past few weeks, most people have probably seen Britney Spears' name or face everywhere. When she stood in front of a judge (virtually) and protested the conservatorship she's been living under for the past 13 years, one harrowing detail in particular stood out. She told the judge, "I was told right now in the conservatorship, I'm not able to get married or have a baby." Today, we look back at an old episode where we explore why it is that hundreds of thousands of people can have their reproductive rights denied...and spoiler: it goes back to Darwin.

When a law student named Mark Bold came across a Supreme Court decision from the 1920s that allowed for the forced sterilization of people deemed “unfit,” he was shocked to discover that it had never been overturned. His law professors told him the case, Buck v Bell, was nothing to worry about, that the ruling was in a kind of legal limbo and could never be used against people. But he didn’t buy it. In this episode we follow Mark on a journey to one of the darkest consequences of humanity’s attempts to measure the human mind and put people in boxes, following him through history, science fiction and a version of eugenics that’s still very much alive today, and watch as he crusades to restore a dash of moral order to the universe.

This episode was produced by Matt Kielty, Lulu Miller and Pat Walters.

Special thanks to Sara Luterman, Lynn Rainville, Alex Minna Stern, Steve Silberman and Lydia X.Z. Brown.

Radiolab’s “G” is supported in part by Science Sandbox, a Simons Foundation initiative dedicated to engaging everyone with the process of science.

Support Radiolab today at Radiolab.org/donate.