In the late 1700s, a young man named Freidrich Froebel was on track to become an architect when a friend convinced him to pursue a path toward education instead. And in changing course, Froebel arguably ended up having more influence on the world of architecture and design than any single architect -- all because Friedrich Froebel created kindergarten. If you’ve ever looked at a piece of abstract art or Modernist architecture and thought “my kindergartener could have made that," well, that may be more true than you realize. Froebel’s Gifts Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.

50 Things That Made The Modern Economy is a podcast that explores the fascinating histories of a number of powerful inventions and their far-reaching consequences. This week, 99% Invisible is featuring three episodes that explain how the s-bend pipe revolutionized indoor plumbing, how high-tech ‘death ray’ led to the invention of radar, and the impact of bricks. Subscribe to *50 Things That Made The Modern Economy *on iTunes and RadioPublic Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.

When Barnett Newman’s painting Who’s Afraid of Red, Yellow and Blue III was placed in the Stedelijk museum it was meant to be provocative, but one reaction that it received was so intense, so violent, it set off a chain of events that shook the art world to its core. The Many Deaths of a Painting Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.

Social Infrastructure is the glue that binds communities together, and it is just as real as the infrastructure for water, power, or communications, although it's often harder to see. But Eric Klinenberg says that when we invest in social infrastructures such as libraries, parks, or schools, we reap all kinds of benefits. We become more likely to interact with people around us, and connected to the broader public. If we neglect social infrastructure, we tend to grow more isolated, which can have serious consequences. Palaces for the People Articles of Interest, Avery Trufelman’s acclaimed podcast mini-series about what we wear, now has its own feed. Subscribe to AOI on Apple Podcasts and RadioPublic. Please leave a review and spread the word. Thanks! Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.

Cartoon sound effects are some of the most iconic sounds ever made. Even modern cartoons continue to use the same sound effects from decades ago. How were these legendary sounds made and how have they stood the test of time? This story originally appeared on Twenty Thousand Hertz Subscribe to Twenty Thousand Hertz in Apple Podcasts, RadioPublic, or wherever you listen. Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.

The tradition of the Tomb of the Unknowns goes back only about a century, but it has become one of the most solemn and reverential monuments. When President Reagan added the remains of an unknown serviceman who died in combat in Vietnam to the Tomb of the Unknowns in Arlington National Cemetery in 1984, it was the only set of remains that couldn’t be identified from the war. Now, thankfully, there will never likely be a soldier who dies in battle whose body can’t be identified. And as a result of DNA technology, even the unknowns currently interred in the tomb can be positively identified. The Known Unknown Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.

Frank Lloyd Wright changed the field of architecture, and not just through his big, famous buildings. Before designing many of his most well-known works, Wright created a small and inexpensive yet beautiful house. This modest home would go on to shape the way working- and middle-class Americans live to this day. Usonia Redux This episode is a recut combination of episodes 246 & 247 Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.

In the 1950s, Los Angeles was an up-and-coming city but wasn’t quite there yet. City leaders were looking for a way to boost Los Angeles's profile as a world class city and also give Angelenos something to rally behind. They believed that what L.A. really needed was a baseball team. They picked Chavez Ravine, near downtown LA, as the perfect home for a perfect new stadium, but the land had been home to a vibrant community of Mexican and Mexican American families for decades. Beneath the Ballpark Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.

Where does your recycling go? In most places in the U.S., you throw it in a bin, and then it gets carted off to be sorted and cleaned at a Materials Recovery Facility (MRF). From there, much of it is shipped off to mills, where bales of paper, glass, aluminum, and plastic are pulped or melted into raw materials. Some of these mills are here in the U.S. And once upon a time, many of them were in China. Since 2001, China was one of the biggest buyers of American recycling. That is, until last year, when China pulled a move that no one saw coming: they stopped buying. National Sword Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.

Here at 99% Invisible, we think about color a lot, so it was really exciting when we came across a beautiful book called The Secret Lives of Color by Kassia St. Clair It’s this amazing collection of stories about different colors, the way they’ve been made through history, and the lengths to which people will go to get the brightest splash of color. The Secret Lives of Color Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.

In May of 1990, law enforcement raided a warehouse in Douglas, AZ and a private home across the border in Agua Prieta, Mexico. Connecting the two buildings, they found a tunnel, more sophisticated than anything anyone had seen before. The tunnel in Douglas became a kind of prototype for many tunnels afterwards and a hallmark of the Sinaloa Cartel. The Tunnel Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.

Santa Barbara, California, is a famously beautiful place, but if you look offshore from one of the city's many beaches, you'll see a series of artificial structures that stand out against the natural blue horizon. These oil platforms are at the center of a complicated debate going on right now within the environmental community about the relationship between nature and human infrastructure. Crude Habitat 99% Invisible’s Impact Design coverage is supported by Autodesk. The Autodesk Foundation supports the design and creation of innovative solutions to the world's most pressing social and environmental challenges. Learn more about these efforts on Autodesk's RedShift. Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.