What Up Holmes?
Radiolab
10/24/25
•35m
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Love it or hate it, the freedom to say obnoxious and subversive things is the quintessence of what makes America America. But our say-almost-anything approach to free speech is actually relatively recent, and you can trace it back to one guy: a Supreme Court justice named Oliver Wendell Holmes. Even weirder, you can trace it back to one seemingly ordinary eight-month period in Holmes’s life when he seems to have done a logical U-turn on what should be say-able. Why he changed his mind during those eight months is one of the greatest mysteries in the history of the Supreme Court. (Spoiler: the answer involves anarchists, a house of truth, and a cry for help from a dear friend.) Join us in an episode we originally released in 2021, as we investigate why he changed his mind, how that made the country change its mind, and whether it’s now time to change our minds again.
Special thanks to Jenny Lawton, Soren Shade, Kelsey Padgett, Mahyad Tousi and Soroush Vosughi.
LATERAL CUTS:
Content Warning
Facebook Supreme Court
The Trust Engineers
EPISODE CREDITS:
Reported by - Latif Nasser
Produced by - Sarah Qari
with help from - Anisa Vietze
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Previous Episode
Content Warning
October 17, 2025
•29m
Over the past five years TikTok has radically changed the online world. But trust us when we say, it’s not how you’d expect.
Today we continue our yearslong exploration of what you can and can’t post online. We look at how Facebook’s approach to free speech has evolved since Trump’s victory. How TikTok upended everything we see. And what all this means for the future of our political and digital lives.
Special thanks to Kate Klonick
EPISODE CREDITS:
Reported by - Simon Adler
Produced by - Simon Adler
Original music from - Simon Adler
with mixing help from - Jeremy Bloome
Fact-checking by - Anna Pujol-Mazzini
Lateral Cuts:
The Trust Engineers
Facebook’s Supreme Court
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.
Next Episode
The Glow Below
October 31, 2025
•28m
A call to oceanographer Edie Widder about a fish with a very odd immune system quickly becomes something else: a dive into the deep sea, into a world of brilliant light. But down there, the light doesn’t behave like light -- it sparkles and glows, but also drips, squirts, and dribbles. Today, find out how creatures make the light and how they use it, from hunting and hiding to maybe even ... talking. And hear about a series of mysterious moments where Edie goes from studying the creatures to becoming one of them.
EPISODE CREDITS:
Hosted by - Molly Webster
Reported by - Molly Webster
Produced by - Maria Paz Gutierrez
with help from - Molly Webster
Fact-checking by - Diane A. Kelly
LATERAL CUTS (Other Radiolab episodes you may like):
Octomom - https://radiolab.org/podcast/octomom
The Darkest Dark - https://radiolab.org/podcast/the-darkest-dark
EPISODE CITATIONS:
Documentary -
Coming soon, there’ll be a new doc about Edie’s life and work studying bioluminescence in deep sea creatures. According to Edie, “A Life Illuminated”, contains some of the best deep sea bioluminescence footage ever recorded. It’s from our friends at Sandbox Films, and director Tasha Van Zandt.
https://www.sandboxfilms.org/films/a-life-illuminated/
Books -
Edie Widder wrote a memoir! Go read, “Below the Edge of Darkness: A Memoir of Exploring Light and Life in the Deep Sea”.https://www.penguinrandomhouse.com/books/564185/below-the-edge-of-darkness-by-edith-widder-phd/
Videos -
It’s not in the episode, but a few years back, Edie’s fame reached new heights when she captured footage of a never-before-seen Giant Squid ... here’s the story, and video.
https://www.youtube.com/watch?v=krDdv9KLmuM
Articles -
A look at some glowing shrimps.
https://zpr.io/3jyHWi7VFBw5
A photo gallery of different types of deep sea glow, from different types of deep sea creatures, including one of counterillumination, which Edie talks about in the episode.
https://zpr.io/hdFFsArGjhau
Sign up 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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