It’s the end of the year and time for our annual Mini-stories episodes. Mini-stories are quick hit stories that were maybe pitched to us from someone in the audience, or something interesting we saw on twitter, or just a cool tidbit that we found in our research that stuck in our heads, but didn’t warrant a full episode for whatever reason. We’ll have stories of mysterious ice boats, green ruins, sack dresses, steampunk violins, and a little update from a couple of the notable city flags that have been redesigned around the country. Mini-Stories: Volume 3 Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.

In the early morning of August 5, 2001, artist Richard Ankrom and a group of friends assembled on the 4th Street bridge over the 110 freeway in Los Angeles. They had gathered to commit a crime. Years before, when Ankrom was driving through downtown Los Angeles, he was going to merge onto the I-5 North. But he missed the exit and got lost. The I-5 exit wasn’t indicated on the green overhead sign. It was clear to Ankrom that the California Department of Transportation had made a mistake. And for some reason, this stuck with him. Ankrom, an artist and sign painter, decided to make the Interstate 5 North shield himself. He also decided that he would take it upon himself to install it above the 110 freeway. He would call it an act of “guerrilla public service.” Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.

In the past fifty years, the car crash death rate has dropped by nearly 80 percent in the United States. And one of the reasons for that drop has to do with the “accident report forms” that police officers fill out when they respond to a wreck. Officers use these forms to document the weather conditions, to draw a diagram of the accident, and to identify the collision’s “primary cause.” All that information gathered on the side of the road goes from the accident report form into a federal database: the Fatality Analysis Reporting System. Car companies, safety advocates, and regulators comb through this data constantly, looking for patterns that help them understand how and why people die in car wrecks. In turn, this information helps designers and engineers create safer vehicles and roadways. The data informs all kinds of design decisions around car safety — everything from speed limits to mandatory seat belts. But this culture of heavily regulated, data-driven, auto-safety engineering did not always exist. In fact, for decades, automakers tried to keep data about car wrecks to themselves. They not only resisted making cars safer, they argued the very idea of a “safe car” was impossible. The Nut Behind the Wheel Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.

While the 1960s shift in print and TV advertising has been heavily documented and mythologized by Mad Men, Madison Avenue’s radiophonic collision with the counterculture is less well known. A radio advertising producer, writer, and composer, Clive Desmond takes listeners on a highly subjective journey through one narrow, eccentric, corridor of radio advertising. Here, he has rescued beautiful forgotten nuggets of radio history and delicately arranged them into a glittering associative chain—a constellation of jingles and spots that somehow all add up to more. A version of episode was originally featured on The Organist, a bi-weekly experimental arts-and-culture program from McSweeney's and KCRW. A 700-Foot Mountain of Whipped Cream Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.

For a long time, anti-counterfeiting laws made it illegal to show US currency in movies. Now you can show real money, but fake money is often preferred. Creating fake money that doesn’t break the law, but looks real enough for film, is a tough design challenge. Money Makers Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.

When a new movie comes out, most of the praise goes to the director and the lead actors, but there are so many other people involved in a film, and a lot of them are designers. There are costume designers and set designers, but also graphic designers working behind the scenes on every single graphic object that you might need in a film. It’s Annie Atkins’s job to design them. Hero Props Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.

Back in the 1950s, St. Louis was segregated and The Ville was one of the only African-American neighborhoods in the city. The community was prosperous. Black-owned businesses thrived and the neighborhood was filled with the lovely, ornate brick homes the city has become famous for. But driving around The Ville today, the neighborhood looks very different. Some buildings are simply rundown or abandoned, but others are missing large chunks entirely. Walls have disappeared. The bricks are gone. "We call them dollhouses," says local Alderman Samuel Moore, "because you can look inside of them." People have been stealing the bricks. Dollhouses of St. Louis Support Radiotopia Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.

New York was built at the mouth of the Hudson River, and that fertile estuary environment was filled with all kinds of marine life. But one creature in particular shaped the landscape: the oyster. It is estimated that trillions of oysters once surrounded New York City, filtering bacteria and acting as a natural buffer against storm surges. Over time, pollution and other environmental changes killed off that oyster population. But a group of landscape architects are designing artificial oyster reefs to help protect the city and foster a better relationship between the natural and built environment along this coastal edge. Oyster-tecture Support Radiotopia Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.

There are a lot of Gothic churches in Spain, but this one is different. It doesn’t look like a Gothic cathedral. It looks organic, like it was built out of bones or sand. But there’s another thing that sets it apart from your average old Gothic cathedral: it isn’t actually old. Gaudí wasn’t able to build very much of his famous church before he died in 1926. Most of it has been built in the last 40 years, and it still isn’t finished. Which means that architects have had to figure out, and still are figuring out, how Gaudí wanted the church to be built La Sagrada Familia Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.

The United States is one of just a handful of countries that that isn’t officially metric. Instead, Americans measure things our own way, in units that are basically inscrutable to non-Americans, nearly all of whom have been brought up in an all-metric environment. Most of the world uses meters, liters, and kilograms, not yards, gallons, and pounds. With so many industries and people crossing borders with so much fluidity, why has the U.S. not fully committed to the system the rest of the world uses? The answer is complicated. Half Measures Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.

It’s hard to overstate the vastness of the Skid Row neighborhood in Los Angeles. It spans roughly 50 blocks, which is about a fifth of the entire downtown area of Los Angeles. It’s very clear when you’ve entered Skid Row. The sidewalks are mostly occupied by makeshift homes. A dizzying array of tarps and tents stretch out for blocks, improvised living structures sitting side by side. The edge of Skid Row is clearly defined and it wasn’t drawn by accident. It’s the result of a very specific plan to keep homeless people on one side and development on the other. And, perhaps surprisingly to outsiders: it’s a plan that Skid Row residents and their allies actually designed and fought for. The Containment Plan Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.

Among the most important advances in sports technology, few can compete with the invention of the sports bra. Following the passage of Title IX in 1972, women’s interest in athletics surged. But their breasts presented an obstacle. Bouncing breasts hurt, as women getting in on the jogging craze found out. Then some friends in Vermont had an idea to stitch a couple jock straps together to build a contraption to keep things in place. This featured story was produced by Phoebe Flanigan and edited by Peter Frick-Wright, with music by Robbie Carver and Dennis Funk. XX Factor: How the Sports Bra Changed History was originally aired on the Outside podcast, a production of Outside Magazine and PRX. The Athletic Brassiere Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.