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Radiolab

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Radiolab
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  • Radiolab

    The Sweetest Thing

    18.09.2026 | 31 Min.
    “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 sight in all of our pantries? A simple mystery that will make you question what sweetness even is, how our tongues (and other body parts you wouldn’t expect) determine what we like, and how far you would go to taste something sweeter than anyone has ever experienced.
    Thank you to Latif’s sons for indulging us, to Nicola Twilley and Cynthia Graber at Gastropod, to Anni Laffitte, Nazli Parvizi at Museum of Food and Drink, to food icons Claire Saffitz and Sam Seneveratne who did a live show version of this episode with us at the Tribeca Festival. And thank you to Davy Gardner and his wonderful team of audio folks at the Tribeca Festival.
    Thank you to Jialin Deng who composed the song that was our ‘sonic seasoning’. And to Laura Rickman and everyone else at Columbia University’s Mortimer B Zuckerman Mind Brain Behavior Institute for hosting us.
    And big thanks to experimental psychologist Charles Spence at Oxford, sweetness chemist Grant DuBois, Danielle Reed at Monell Chemical Senses Center, and nutritional scientist Sarah Berry at King’s College London who all talked to us about their research. And Brian Everett of Honest Organic Farms.

    And a very special thanks to Sean Oomens, inventor of producer Jess Yung’s favorite candy, nerd gummy clusters

    EPISODE CREDITS:
    Reported by - Latif Nasser
    with help from - Jessica Yung, Maria Paz Gutierrez, Jessica Yung, Ekedi Fausther-Keeys, and Natalia Ramirez
    Produced by - Jessica Yung
    with help from - Mona Madgavkar, Maria Paz Gutierrez, Gabby Santas, and Maia Appleby Melamed
    with mixing help from - Jeremy Bloom
    Fact-checking by - Sophie Samiee
    and Edited by - Pat Walters
    EPISODE CITATIONS:
    Videos:
    Youtuber Chemiolis tried to make Luguduname himself (https://zpr.io/MmUbGfwwFrFH)
    Articles -
    Race to Redesign Sugar (https://zpr.io/VpsMxfPRbxaz) by Nicola Twilley
    The Search for Sweet (https://zpr.io/JmeDkVhrd2dK) by Burkhard Bilger
    How My Trip to Quit Sugar Became A Journey Into Hell (https://zpr.io/ni6xgC38Qmyf) by Caity Wever
    How Much of Our Existence Do We Owe to Sugar? (https://zpr.io/M2py48SxnQAT) by Jackie Flynn Mogensen
    Scientists Find Sugar In Space (https://zpr.io/e94UtUuhPtbT) by Rebecca Dzombak
    Sign up for our newsletter!! It includes short essays, recommendations, and details about other ways to interact with the show. Signup (https://radiolab.org/newsletter)!
    Radiolab is supported by listeners like you. Support Radiolab by becoming a member of The Lab (https://members.radiolab.org/) today.
    Follow our show on Instagram, Twitter and Facebook @radiolab, and share your thoughts with us by emailing radiolab@wnyc.org.
    Leadership support for Radiolab’s science programming is provided by the Simons Foundation and the John Templeton Foundation. Foundational support for Radiolab was provided by the Alfred P. Sloan Foundation.

    Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.
  • Radiolab

    23 Weeks 6 Days

    11.09.2026 | 1 Std. 3 Min.
    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 impossible to answer.
    This hour, which we first released in 2013, we spend the entire episode on the story of Kelley and Tom, whose daughter was born at 23 weeks and 6 days, roughly halfway to full term. Their story contains an entire universe of questions about the lines between life and death, reflex and will, and the confusing tug of war between two basic moral touchstones: doing no harm...and doing everything in our power to help. Kelley has written about her experience in a brilliant series of articles in the Tampa Bay Times.
    If you want to know more about what we talk about in the update tacked onto the end of this episode, check out the links below:
    This Photo Here (https://zpr.io/ZvMD42u9hzuu)
    Plus This Video Here (https://zpr.io/8ewZUD368TzP)
    Check out the book that Tom and Kelley wrote about Juniper here:
    Juniper: The girl who was born too soon. (https://zpr.io/8ewZUD368TzP)
    And when you're done listening to the episode, be sure to check out the video below--but be warned, it does contain spoilers.
    23 Weeks 6 Days Video
    EPISODE CREDITS:
    Reported by Jad Abumrad
    Produced by Matt Kielty and Jad Abumrad
    Update produced by Pat Walters and Anisa Vietze
    with mixing help from Jeremy Bloom

    Sign up for our newsletter!! It includes short essays, recommendations, and details about other ways to interact with the show. Signup (https://radiolab.org/newsletter)!
    Radiolab is supported by listeners like you. Support Radiolab by becoming a member of The Lab (https://members.radiolab.org/) today.
    Follow our show on Instagram, Twitter and Facebook @radiolab, and share your thoughts with us by emailing radiolab@wnyc.org.
    Leadership support for Radiolab’s science programming is provided by the Simons Foundation and the John Templeton Foundation. Foundational support for Radiolab was provided by the Alfred P. Sloan Foundation.



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  • Radiolab

    60 Words

    04.09.2026 | 58 Min.
    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 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.
    LATERAL CUTS -
    Really anything from our sister show, More Perfect
    EPISODE CREDITS:
    Reported by - Kelsey Padgett
    with help from - Matt Kielty
    Produced by - Matt Kielty
    with help from - Kelsey Padgett
    Sign up for our newsletter!! It includes short essays, recommendations, and details about other ways to interact with the show. Signup (https://radiolab.org/newsletter)!
    Radiolab is supported by listeners like you. Support Radiolab by becoming a member of The Lab (https://members.radiolab.org/) today.
    Follow our show on Instagram, Twitter and Facebook @radiolab, and share your thoughts with us by emailing radiolab@wnyc.org.
    Leadership support for Radiolab’s science programming is provided by the Simons Foundation and the John Templeton Foundation. Foundational support for Radiolab was provided by the Alfred P. Sloan Foundation.



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  • Radiolab

    Dolly Parton's America: Sad Ass Songs

    28.08.2026 | 1 Std. 4 Min.
    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 queen of the boob joke become a feminist icon? Helen Morales, author of “Pilgrimage to Dollywood,” gave us a stern directive – look at the lyrics! So we dive into Dolly’s discography, starting with the early period of what Dolly calls “sad ass songs” to find remarkably prescient words of female pain, slut-shaming, domestic violence, and women being locked away in asylums by cheating husbands. We explore how Dolly took the centuries-old tradition of the Appalachian “murder ballad”—an oral tradition of men singing songs about brutally killing women—and flipped the script, singing from the woman’s point of view. And as her career progresses, the songs expand beyond the pain to tell tales of leaving abuse behind.

    How can such pro-woman lyrics come from someone who despises the word feminism? Best to let Dolly tell you herself.

    EPISODE CREDITS:

    Reported by - Jad Abumrad and Shima Oliaee

    Produced by - Jad Abumrad

    with help from - W. Harry Fortuna

    Original music from - Alex Overington

    Sound design contributed by - Alex Overington

    and Edited by - Suzie Lechtenberg

    Signup for our newsletter!! It includes short essays, recommendations, and details about other ways to interact with the show. Sign up (https://radiolab.org/newsletter)!

    Radiolab is supported by listeners like you. Support Radiolab by becoming a member of The Lab (https://members.radiolab.org/) today.

    Follow our show on Instagram, Twitter and Facebook @radiolab, and share your thoughts with us by emailing radiolab@wnyc.org.

    Leadership support for Radiolab’s science programming is provided by the Simons Foundation and the John Templeton Foundation. Foundational support for Radiolab was provided by the Alfred P. Sloan Foundation.

    Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.
  • Radiolab

    Patient Zero

    21.08.2026 | 51 Min.
    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 episode we first produced in 2011 and hunts for Patient Zeroes from all over the map. We start with the story of perhaps the most iconic Patient Zero of all time: Typhoid Mary. Then, we dive into a molecular detective story to pinpoint the beginning of the AIDS, and we re-imagine the moment the virus that caused the global pandemic sprang to life. After that, we're left wondering if you can trace the spread of an idea the way you can trace the spread of a disease. In the end, we find ourselves faced with a choice between competing claims about the origin of the high five. 

    Signup for our newsletter!! It includes short essays, recommendations, and details about other ways to interact with the show. Sign up (https://radiolab.org/newsletter)!

    Radiolab is supported by listeners like you. Support Radiolab by becoming a member of The Lab (https://members.radiolab.org/) today.

    Follow our show on Instagram, Twitter and Facebook @radiolab, and share your thoughts with us by emailing radiolab@wnyc.org.
    Leadership support for Radiolab’s science programming is provided by the Simons Foundation and the John Templeton Foundation. Foundational support for Radiolab was provided by the Alfred P. Sloan Foundation.

    Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.
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Über Radiolab
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.
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