Today we have a story about the sometimes obvious but sometimes sneaky effects of the way that we humans rearrange the elemental stuff around us. Reporter Avir Mitra brings us a story about how one man's relentless pursuit of a deep truth about the Earth led to an obsession that really changed the very air we breathe.  This episode was reported by Avir Mitra, and produced by Matt Kielty, Becca Bressler, Rachael Cusick, and Maria Paz Gutiérrez. Special thanks to Cliff Davidson, Paul M. Sutter, Denton Ebel, and Sam Kean. Support Radiolab by becoming a member today at Radiolab.org/donate.

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. For Diane Van Deren, a charming mother of three, daily life is a struggle. But as soon as she steps outdoors, she's capable of amazing feats. She can run for days on end with no sleep, covering hundreds of miles in extreme conditions. Reporter Mark Phillips heads to Colorado to get to know Diane, and to try to figure out what makes her so unstoppable. Support Radiolab by becoming a member today at Radiolab.org/donate.     

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

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 today at Radiolab.org/donate.

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".