99% Invisible

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. Articles of Interest, Avery Trufelman’s acclaimed podcast mini-series about what we wear, now has its own feed. Subscribe to AOI on . Please leave a review and spread the word. Thanks!

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 Subscribe to Twenty Thousand Hertz in , or wherever you listen.

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.

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. This episode is a recut combination of episodes 246 & 247

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.