99% Invisible

99% Invisible

Design is everywhere in our lives, perhaps most importantly in the places where we've just stopped noticing. 99% Invisible is a weekly exploration of the process and power of design and architecture. From award winning producer Roman Mars. Learn more at 99percentinvisible.org.

Episodes

October 21, 2026 • 29 mins

This episode is sponsored by Acura.

From the outside, the building is a light gray spiral, and from the inside, the art is displayed on one long ramp that curves up towards a glass skylight in the ceiling. We’re going to take the greatness of this building as a given. What we’re going to focus on are the oddities, the accretions, the interventions that reveal a different kind of genius. Not just the genius of Frank Lloyd...

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A desert train built for Tony Hawk leads into the strange and thoughtful world of N.D. Austin, a designer of real-life experiences.

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October 13, 2026 • 43 mins

Football helmets can prevent devastating injuries, but they may also help make an inherently violent game feel safer than it really is.

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October 6, 2026 • 28 mins

A closer look at the messy, beautiful bricks hiding across Chicago.

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October 2, 2026 • 52 mins

Comedian, writer, and podcaster Jamie Loftus has always known about Alcoholics Anonymous. As a kid, she loved the album where her dad kept all his AA chips — that little piece of plastic that marks a day, a month, a year of sobriety. Now as an adult, Jamie wanted to understand where that little chip came from. What she found is that imbued in that little chip is a hidden history — from Prohibition to women’s suffr...

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September 29, 2026 • 32 mins

How a Swiss mountain call crossed the Atlantic and helped define the sound of country music.

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September 25, 2026 • 38 mins

This episode is sponsored by Claude. For problems worth solving, get started with Claude at Claude.ai.

The Western Electric 500 Series Telephone used to be everywhere. For over 50 years, it was the default telephone for homes, offices and literally anywhere else you might need a phone… but how did that happen? Why was this one phone so much better than everything that came before… or, in some ways, since? Former MythBu...

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September 22, 2026 • 32 mins

How a movie prop became one of Philadelphia’s most beloved monuments, and sparked a decades-long fight over where it belonged.

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September 18, 2026 • 35 mins

Somewhere between 85 to 95 percent of Black women in the United States have used a chemical hair relaxer at least once in their lifetime. It is a ubiquitous American product with a complicated legacy: it built Black wealth and opened economic doors, but also taught generations to see their hair as a problem to be solved. And now research is revealing a physical cost. Roman Mars and producer Priscilla Alabi explore how a single prod...

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September 15, 2026 • 37 mins

A legendary typeface, a spectacular friendship breakup, and one extremely committed act of revenge.

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September 11, 2026 • 41 mins

Articles of Interest host Avery Trufelman joins Roman to tell the incredible story of the American military’s jacket problem: How should the military outfit its soldiers to make them as safe and effective as possible? The answer was the M43 Field Jacket, which not only changed what it meant to be a soldier and look like a soldier, it changed what we all wear every day—in America, and around the world.

A History of the U...

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September 8, 2026 • 38 mins

Every product has to be tested somehow, and sometimes that means finding increasingly creative ways to break it.

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September 4, 2026 • 46 mins

This episode is sponsored by Claude. For problems worth solving, get started with Claude at Claude.ai.

If you watched Wheel of Fortune in the 1980s, you probably remember one prize more than all the others: the ceramic Dalmatian. For a brief moment, that prize—perhaps the ultimate useless object—became the mascot for one of America's most popular game shows, appearing on tens of millions of TV screens, night after night...

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September 1, 2026 • 43 mins

This week, two stories about the strange power of the 1-800 number.

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August 28, 2026 • 37 mins

In 1888, Willard Bundy created the first employee "time clock" — essentially a souped-up grandfather clock that could, for the first time, produce an accurate record of when workers arrived and left. Though Bundy’s aim was simple, his invention soon sparked a change in American life far broader than he intended. Roman Mars and reporter Ellie Lightfoot trace how the time clock not only ignited a revolution in workplace e...

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August 25, 2026 • 28 mins

Spolia, from a Liverpool neighborhood to ancient Rome.

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August 21, 2026 • 41 mins

Producer and reporter Ramtin Arablouei (co-creator of the NPR show, Throughline) has a simple question: why are so many NBA players wearing a compression sleeve on their arm? It seems like everyone has one. Do they all have elbow issues? The answer is really the story of Allen Iverson, an underdog player who went from a prison cell to international fame in just a few years. And through the story of him and his sleeve, you can see t...

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August 18, 2026 • 44 mins

Two rival paleontologists turn a hunt for dinosaur bones into an all-out scientific war.

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August 14, 2026 • 48 mins

This episode is sponsored by Claude. For problems worth solving, get started with Claude at Claude.ai.

On his deathbed, President Chester Arthur ordered that all of his personal and professional papers be burned. Three barrels of documents went up in flames. But 23 letters survived, initialed only "J.I.S." Comedian Elliott Kalan joins Roman Mars to tell the story of how a politician who owed so much to a corrupt government system b...

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August 11, 2026 • 32 mins

A devastating fire put one of Hong Kong's oldest building traditions on trial, but the real story runs much deeper.

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