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Throughline: Daily Summaries Delivered
by NPR
Throughline is a time machine. Each episode, we travel beyond the headlines to answer the question, "How did we get here?" We use sound and stories to bring history to life and put you into the middle of it. From ancient civilizations to forgotten figures, we take you directly to the moments that shaped our world. Throughline is hosted by Peabody Award-winning journalist Rund Abdelfatah.
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- 1 weeks ago37 min
The dramatic race to discover Insulin
Looksmaxxing, weight loss, and muscle building have fueled a massive craze for injectable peptides. Some natural and some synthetic. These injectables have unleashed a multi-billion-dollar gray-market industry online and a high-stakes frontier for the pharmaceutical industry. Today, we reach back to the quest to manufacture the first peptide-based medicine: Insulin.Guests:Alison Li, historian of science and medicine, author of J. B. Collip and the Development of Medical Research in Canada: Extracts and EnterpriseGrant Maltman, curator of Banting House National Historic SiteSupport public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s perks include sponsor-free listening. Learn more at plus.npr.org.See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences.NPR Privacy Policy
- 1 weeks ago19 min
Can the polygraph test really spot a lie?
From dating shows to police interrogation rooms, the polygraph test has long been marketed as a way to detect deception. But can it really? And who decided we needed a truth machine in the first place? In this episode, a Throughline listener sends us on a quest to uncover the story of the lie detector.Guests:Ken Alder, professor of history at Northwestern University and author of The Lie Detectors: The History of an American ObsessionSupport public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s perks include sponsor-free listening. Learn more at plus.npr.org.See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences.NPR Privacy Policy
- 2 weeks ago47 min
Is the death penalty cruel and unusual?
The Eighth Amendment. What is cruel and unusual punishment? Who gets to define and decide the amendment's boundaries? And how did the Constitution's authors imagine it might change? In this hour, the shifting definition of cruel and unusual punishment. This episode was originally published in January 2025. Guests:John Bessler, law professor at the University of Baltimore School of Law, and adjunct professor at the Georgetown University Law Center. Author of The Death Penalty's Denial of Fundamental Human Rights.Carol Steiker, law professor at Harvard Law School and author of Courting Death: the Supreme Court and Capital Punishment.Support public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s perks include sponsor-free listening. Learn more at plus.npr.org.See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences.NPR Privacy Policy
- 2 weeks ago16 min
Why does everything get a standing ovation now?
Call it standing ovation inflation: these days, it feels like it's mandatory to stand and clap for live performances. Has our please clap era gone too far? That's what one Throughline listener wanted to know. So we traced the winding road from Shakespeare’s epilogues to Broadway divas to ridiculously long film festival ovations… and how they helped engineer the way we applaud.Guests:Roger Gilbert, professor in the Department of Literatures in English at CornellKyle Buchanan, reporter and columnist for the New York TimesSupport public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s perks include sponsor-free listening. Learn more at plus.npr.org.See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences.NPR Privacy Policy
- 3 weeks ago43 min
Four Seasons of Ceasefire in Gaza
NPR’s Anas Baba is one of the last remaining journalists in Gaza working full-time for an American news organization. A year into the ceasefire, more than 1400 people have been killed in Israeli attacks, nearly 5,000 injured. And those numbers rise nearly every day. What has the last year looked and felt like on the ground? In this episode, Baba takes us through four seasons of ceasefire—as both a resident trying to survive and a reporter trying to document reality.Guests:Anas Baba, NPR Gaza reporterSupport public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s perks include sponsor-free listening. Learn more at plus.npr.org.See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences.NPR Privacy Policy
- 4 weeks ago52 min
How To Avoid The End of the World
We live in a moment with almost daily reminders of how fragile life on Earth is whether it be from climate change, nuclear weapons or AI. In this episode, we bring you a story from the not-so-distant past when we learned what drove dinosaurs to extinction. And how it might have helped us avoid the same end. This episode was originally published in March 2025.Guests:David Sepkoski, Thomas M. Siebel Chair in History of Science at the University of Illinois and author of Catastrophic Thinking: Extinction and the Value of Diversity.Owen Brian Toon, professor of atmospheric and oceanic sciences at the University of Colorado Boulder.Alec Nevala-Lee, novelist, critic, and biographer and author of the forthcoming book Collisions: A Physicist's Journey from Hiroshima to the Death of the Dinosaurs.Ann Druyan, co-writer and co-creator of the television series Cosmos: A Personal Voyage.Andrew Revkin, science and environmental journalist.Support public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s perks include sponsor-free listening. Learn more at plus.npr.org.See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences.NPR Privacy Policy
- Sep 29, 202621 min
Forty years of what if
On January 28, 1986, the Space Shuttle Challenger exploded 73 seconds after liftoff. All seven astronauts onboard died. Brian Russell, an engineer who worked on the shuttle, had spent months warning NASA that freezing temperatures could cause a critical seal to fail. In this episode, Brian Russell takes us to the intense meeting where NASA had to decide whether to launch and the 40-year weight of a tragedy he tried to prevent.Support public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s perks include sponsor-free listening. Learn more at plus.npr.org.See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences.NPR Privacy Policy
- Sep 24, 202650 min
Democratic Socialism. Hope or Hopeless?
The Democratic Socialists of America (DSA) is having a big moment. Its candidates and its membership are both surging. Before Zohran Mamdani and AOC, there was its founder, Michael Harrington, a.k.a 'the man who discovered poverty.' In this episode, we dig into Harrington’s evolution from devout Catholic to revolutionary socialist to Democratic party loyalist, and ask: did his push to compromise delay the dream or pave the way for it? Guests:Maurice Isserman, author of The Other American: The Life of Michael Harrington.Doug Greene, author of A Failure of Vision: Michael Harrington and the Limits of Democratic Socialism.Support public media with NPR+ and enjoy perks for over 25 podcasts like this one. This show’s perks include sponsor-free listening. Learn more at plus.npr.org.See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences.NPR Privacy Policy
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About Throughline
Throughline is a time machine. Each episode, we travel beyond the headlines to answer the question, "How did we get here?" We use sound and stories to bring history to life and put you into the middle of it. From ancient civilizations to forgotten figures, we take you directly to the moments that shaped our world. Throughline is hosted by Peabody Award-winning journalist Rund Abdelfatah.
Customized Recaps
AI-powered recaps with compact key takeaways, quotes, and insights.
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Frequently Asked Questions
What is Podzilla's Throughline daily summary?
It's a free AI-powered email that summarizes new episodes of Throughline as soon as they're published. You get the key takeaways, notable quotes, and links & mentions — all in a quick read.
How does the Throughline podcast summary work?
When a new episode drops, our AI transcribes and analyzes it, then generates a personalized summary tailored to your interests and profession. It's delivered to your inbox every morning.
Is this an official Throughline product?
No. Podzilla is an independent service that summarizes publicly available podcast content. We're not affiliated with or endorsed by NPR.
Can I get summaries of other podcasts too?
Absolutely! The free plan covers up to 3 podcasts, any in the catalog. Basic raises that to 15, Pro to 40 and Max to 100. Browse our full catalog at /podcasts.
How often does Throughline release new episodes?
Throughline publishes 2x weekly. Our AI generates a summary within hours of each new episode.
What topics does Throughline cover?
Throughline covers topics including History, Documentary, Culture, Society & Culture. Our AI identifies the specific themes in each episode and highlights what matters most to you.
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Free forever for up to 3 podcasts. No credit card required.
Free forever for up to 3 podcasts. No credit card required.