Cheeky highway signs, Jane Fonda’s surprising side hustle, a dynamite twist on legacy, and the Greeks’ ideal foot obsession—expect the... more

Roman Mars and the Flop House team dive into Francis Ford Coppola's intriguing and controversial film, Megalopolis, exploring its chaotic... more

How did the “15 Minute City,” a simple urban planning idea, spark protests, conspiracy theories, and death threats? This week,... more

After Toronto unveiled its "raccoon-resistant" compost bins in 2016, some people feared the animals would be starved but many more... more

What makes The Power Broker endure 50 years on? Roman Mars and Elliott Kalan sit down with legendary author Robert... more

Featuring Brennan Lee Mulligan, a comedian and host with Dropout TV, and covering the second section of Part 7, chapters... more

Roman talks with The Memory Palace creator Nate DiMeo, whose new book brings his poetic history podcast to life on... more

As the last warmth of summer fades, Riis Beach—a hidden queer oasis behind a decaying hospital—faces a new reality.

Remember when grocery shelves went bare and cargo ships clogged the California coast? That chaos wasn’t just a pandemic hiccup—it... more

Spirit Halloween takes over empty stores every fall—explore the eerie allure behind these spooky pop-ups and what they say about... more

Featuring Clara Jeffery, the editor-in-chief of Mother Jones and the Center for Investigative Reporting, and covering the last section of... more

Three stories about designs meant to fool you.

In this bonus episode, Roman unearths the surprising story behind the 99% Invisible's name and delves into the unnoticed brilliance... more

In Copenhagen, Christiania—a commune born from rebellion—now faces mounting pressures that could force it to choose between its radical ideals... more

The unexpected story of how Alfred Nobel’s invention of dynamite—designed to build the world—was co-opted by anarchists to bring about... more

The decades-long creation of possibly the most controversial form of entertainment: reality television. How does it shape our world and... more

Featuring Majora Carter, an urban revitalization strategist and real estate developer from the South Bronx, and covering the third section... more

Zombie mortgages—decades-old debts—are suddenly coming back to life and threatening to take everything away.

Once considered the most dangerous city in the world due to drug cartel violence, by the early 2000s Medellin had... more

In the final episode of Not Built for This, we reckon with the biological limits of climate adaptation.

How the residents of Hamilton City, California finally got the levee they deserved.

What’s it like for residents to fight like hell for help, but the help on offer means leaving the place... more

As storms get more extreme and unpredictable, insurance companies are running the numbers on Florida and realizing that the math... more

How a wildfire in California exacerbated a housing crisis.

Reporter Emmett Fitzgerald was used to hearing people call his home state of Vermont a “climate haven.” But last summer,... more

Featuring writer and influencer, Shiloh Frederick, and covering the second section of Part 6, chapters 33-34.

A preview of our new mini-series Not Built For This and couple stories from the relaunched What Roman Mars Can... more

When you’re watching the opening credits to a movie, it’s not just a list of names. What you’re actually seeing... more

The 2024 Paris Olympics are currently under way, and we thought we’d play two stories from the 99% Invisible archives... more

Weird Sports, White Elephants, and When Doves Cry

Featuring Secretary of Transportation Pete Buttigieg, and covering the second half of Part 5 and the first section of Part... more

Decades ago, the city of Los Angeles buried its natural river in concrete and turned it into infrastructure. And understanding... more

One intrepid reporter travels to Germany to witness a chord change for an organ concert designed to last 639 years,... more

It’s hard to overstate the vastness of the Skid Row neighborhood in Los Angeles. It spans roughly 50 blocks, which... more

Nearly 10 years after the launch of the JUUL, Backfired: The Vaping Wars asks: Could e-cigarettes have been the solution... more

Featuring television producer, writer, director, and actor Mike Schur, and covering the first half of Part 5, chapters 25-26.

In the 55 years since the Saffir-Simpson Hurricane Wind Scale was created to warn us about hurricanes, hurricanes have become... more

The leaf blower is one of the most hated objects in the modern world, but the reality of banning them... more

Whose job is it to fact check the Supreme Court? As it turns out, no one. So why is it... more

Squirrels were purposefully introduced into our cities in the 1800s, and when their population exploded, we lost track of how... more

Roman talks to Jake Berman, author of "The Lost Subways of North America."

Featuring Brandy Zadrozny, senior reporter for NBC News who covers misinformation, conspiracy theories, and the internet, and covering the last... more

Where's my jetpack?

How an ugly puppet created television as we know it.

In this bonus episode, Lasha talks about extra reporting she did for Towers of Silence on the current state of... more

Our pal Gillian Jacobs takes us through the history of poison control and the yucky face meant to warn children... more

How the loss of vultures in India has put an ancient burial tradition in crisis.

Featuring the U.S. representative for New York's 14th congressional district, Alexandria Ocasio-Cortez, and covering the second section of Part 4,... more

Dan Pashman embarks on an epic trip across Italy in search of lesser-known pasta dishes — and to learn about... more

Bright, flamboyant central African fashion

The history of the chambre de bonne, the tiny French apartment type that may be, finally, on the way out.

A 99pi guide to some of our favorite design features of Athens, Georgia.

How to accommodate autism in the built world

The garbage disposer and the dream of a garbage-free city

Featuring Blank Check co-host and The Atlantic movie critic David Sims covering the first section of Part 4, chapters 11-15.

The constant and sometimes fraught back and forth between cartoons and toys, as exemplified by Transformers and the Teenage Mutant... more

Understanding the clunky Prop 65 warnings on products

A 99pi guide to some of our favorite design features of Santa Fe.

Since the mid-1970s, almost every jazz musician has owned a copy of the same book and originally it was a... more

It’s been said that history is written by the person at the typewriter. But who did the person who made... more

How much film and television shapes us as individuals and as a society, far beyond what we give it credit... more

Featuring New York Times columnist Jamelle Bouie, covering Part 3, chapters 6-10.

How White Castle invented fast food

The interblock parks of Sofia, Bulgaria that are caught between old failed communism and new hyper capitalism

There are memorials to lost fishermen, lost astronauts, even lost members of Lynyrd Skynyrd. What should a COVID pandemic memorial... more

A 99pi guide to some of our favorite design features of Chicago

The design evolution of the seemingly simple, but not all that simple, skateboard

Featuring author Robert Caro covering The Introduction, Part 1, and Part 2 (intro through chapter 5).

The fake villages and role players used to train US soldiers

Upside-down construction, the linguistics of filler, and a fire that has been burning...and will burn... for decades.

Mapping the long history of Slovenia onto the three "Santas' that visit each year

We have a year-end mix of short stories about a rogue architect, spooky kitchens, a hundred year old music streaming... more

The storied evolution of pocket calculation

Roman Mars and Elliott Kalan are starting The Power Broker book club that will run through all of 2024 as... more

The tradition of the Tomb of the Unknown goes back only about a century, but it has become one of... more

A band that was never meant to be recorded and a personal recorder that was never designed to capture music... more

A town's fight to be free from the noise and trauma of the Cincinnati Police Department's open-air gun range

How Reno became the go-to place to get a quick divorce and how divorce laws have changed over time

The hunt to cultivate the cure for malaria

Designing environments for people with dementia

Devo’s first record and the fight over the arresting image of a flashy, handsome golf legend on the cover.

The historic vote over which version of Elvis should be immortalized on a postage stamp

Over its more than 40 year journey from conception to completion, Boston’s Big Dig massive infrastructure project, which rerouted the... more

Two stories where the devil is in the details

The triumph and tragedy of the Sydney Opera House

Who were the real Luddites?

The story of how "Who Let The Dogs Out" ended up stuck in all of our brains. A story that... more

Solving the housing crisis and the office vacancy crisis with one obvious and elegant idea: office to housing conversion. If... more

The story of a voice training VHS tape that helped trans women at a time when other resources were hard... more

More about the trails as an object and an idea

We take the humble trail, what might be the original designed object, and deconstruct it

The decades-long campaign to get us to love our gas stoves

Andrew Leland takes us through the fascinating history of alternative reading technologies designed for blind people and discusses his fantastic... more

La Sombrita and the politics of shade

The ubiquity and cultural legacy of the shocking little Christian comics books called Chick Tracts

Proximity founder Ryan Coogler talks all about podcasts with Roman Mars

Composer Raymond Scott’s lifelong quest to build an automatic songwriting machine, and what it means for our own AI-addled, ChatGPT... more

Many consider Margarete Schütte-Lihotzky's Frankfurt Kitchen to be nothing less than the first modern kitchen.

The pregones of Mexico City and the one call that stands out from the cacophony

How courtroom artists became the preferred way to document trials

The unlikely battle between the creator of the New York Public Library's children's reading room and Goodnight Moon

Slip coaches, the worlds shortest trains, private cars, torpedoes, and of course, Thomas.

The massive consequence of parking minimums

Seven small inventions that changed the world in a big way

The scourge of bad closed captioning

The strange design history and modern resurgence of pinball

Best-selling author John Green and Roman Mars answer questions and give dubious advice

From scratchers to the Powerball, the lottery is the most popular form of gambling in the United States, even though... more

Today the Netherlands has a reputation as a kind of bicycling paradise, but that was far from inevitable

The “panopticon” might be the best known prison concept in the world. It’s become the metaphor for the surveillance... more

The rise, fall, and unexpected second life of the crosscut saw is also the story of how America created the... more

Two stories about the transformative power of silence from our friends at Twenty Thousand Hertz

Friction, tribology, and the complex art and science of lubrication

When online worlds end

The surprisingly long history of trying to use robots to call balls and strikes in baseball

The importance of humor and art in protesting (and ousting!) oppressive regimes

When LA punks were looking for a place to play in the late 1970s, Chinatown welcomed the unruly scene. But... more

On Aug. 1, 1942, the nation’s recording studios went silent. Musicians were fed up with the new technologies threatening their... more

In the 20th century, Iowa high school girls basketball was HUGE but it was not the game we know today

How an ultra-marathon called The Comrades became a national obsession in South Africa and a model for inclusion during some... more

The shifting symbolism of Brazil's iconic yellow soccer jersey

We’re kicking off the new year at 99pi with a fresh installment of mini-stories, including: what lies at the intersection... more

A Balikbayan box is a huge cardboard box (often weighing over 100 pounds) that Filipinos living all over the world... more

It's Mini-Story Season! You’ll hear about a very, very long escalator! Beavers dropping from the sky!  We’ll hear from Janet,... more

If you’ve ever flipped through the radio dial — not satellite, not podcasts, but good old-fashioned AM and FM radio... more

The epic tale of the Hollywood celebrity mountain lion known as P-22

There is a subset of real life superheroes who are more focused on things like picking up trash and taking... more

The incredible story of the black men who became America's first paramedics

Roman and Kurt are back with another series of railroad tales. All aboard!

Avery Trufelman's Articles of Interest is back!

Jody Rosen joins us to talk about the evolution of the bicycle, how it became a cultural phenomenon in the... more

Reporter/producer Gillian Jacobs (Community, Winning Time) takes us on a stroll on the Walk of Fame, a 1.3 mile monument... more

The history and significance and of the much maligned vuvuzela

Jamaica is famous around the world for its music, including genres like ska, dub, and reggae. It’s tempting to think... more

The jackalope is a mythical mascot of the American West – inspiring an absolute river of trinkets and songs and... more

On this special feature episode, President Bill Clinton interviews 99% Invisible host and creator Roman Mars.

How did we get to a point where "search" is failing us?

North Korea's state-run design studio has long been a prolific maker of statues around the world, particularly in Africa

The infrastructure, zoning, and cultural factors that make the hit Japanese TV program Old Enough, where toddlers go on errands... more

There's a particular one-kilohertz tone that is universally understood to be covering up inappropriate words on radio and TV. But... more