99% Invisible

Journalist Sam Bloch used to live in Los Angeles. And while lots of people move to LA for the sun and the hot temperatures, Bloch noticed a real dark side to this idyllic weather: in many neighborhoods of the city, there's almost no shade. Shade can literally be a matter of life and death. Los Angeles, like most cities around the world, is heating up. And in dry, arid environments like LA, shade is perhaps the most important factor influencing human comfort. Without shade, the chance of mortality, illness, and heatstroke can go way up. Shade

This is part 2 of the 2019- 2020 mini-stories episodes where I interview the staff about their favorite little stories from the built world that don’t quite fill out an entire episode for whatever reason but they are cool 99pi stories nonetheless… We have centuries old bonds, standard tunings mandated by international treaty, abandoned mansions, and secret babies. If you ever need a conversation starter, the mini-stories are our gift to you. Mini-Stories 8

It’s the end of the year and time for our annual mini-stories episodes. Mini-stories are fun, quick hit stories that came up in our research for another episode...or maybe it was some cool thing someone told us about that we found really interesting. They didn’t quite warrant a full episode and two months of hard reporting, but they’re great 99pi stories nonetheless. And my favorite part is we do them as unscripted interviews where I’m in the studio with the people who work on this show, who I like a lot. Sometimes I know a little about what they’re going to talk about, but sometimes I know nothing. It’s very fun. This week we have stories of mistaken identity, unreachable iconic tour destinations, haunted architecture, and of course, raccoons. Mini-Stories: Volume 7 Make your mark. Go to radiotopia.fm to donate today.

The long-awaited return of Smart Stuff with Justin and Roman, featuring Justin McElroy and Roman Mars. Make your mark. Go to radiotopia.fm to donate today. Everyone should listen to My Brother, My Brother, and Me on the Max Fun Network.

Throughout Joseph Weizenbaum's life, he liked to tell this story about a computer program he’d created back in the 1960s as a professor at MIT. It was a simple chatbot named ELIZA that could interact with users in a typed conversation. As he enlisted people to try it out, Weizenbaum saw similar reactions again and again -- people were entranced by the program. They would reveal very intimate details about their lives. It was as if they’d just been waiting for someone (or something) to ask. ELIZA was one of the first computer programs that could convincingly simulate human conversation, which Weizenbaum found frankly a bit disturbing. The ELIZA Effect Make your mark. Go to radiotopia.fm to donate today.

“Incubators for premature babies were, oddly enough, a phenomenon at the turn of the 20th century that was available at state and county fairs and amusement parks rather than hospitals,” explains Lauren Rabinowitz, an amusement park historian. If you wanted your at-risk premature baby to survive, you pretty much had to bring them to an amusement park. These incubator shows cropped up all over America. And they were a main source of healthcare for premature babies for over forty years. The Infantorium Make your mark. Go to radiotopia.fm to donate today.

In the 1930s, Lester Gaba was designing department store windows and found the old wax mannequins uninspiring. So he designed a new kind of mannequin that was sleek, simple, but conveyed style and personality. As a marketing stunt, he took one of these mannequins everywhere with him and she became a national obsession. “Cynthia” captivated millions and was the subject of a 14-page spread in Life Magazine. Cynthia and the other Gaba Girls changed the look and feel of retail stores. Mannequin Pixie Dream Girl Make your mark. Go to radiotopia.fm to donate today.

Galileo tried to teach us that adding more and more layers to a system intended to avert disaster often makes catastrophe all the more likely. His basic lesson has been ignored in nuclear power plants, financial markets and at the Oscars... all resulting in chaos. At the 2017 Academy Awards, Warren Beatty and Faye Dunaway famously handed the Best Picture Oscar to the wrong movie. In this episode of Cautionary Tales, Tim Harford takes us through all of the poor design choices leading into the infamous La La Land/Moonlight debacle, and how it could have been prevented. Cautionary Tales Subscribe to Cautionary Tales on Apple Podcasts

There are symbols all around us that we take for granted, like the lightning strike icon, which indicates that something is high voltage. Or a little campfire to indicate that something is flammable. Those icons are pretty obvious, but there are others that aren't so straightforward. Like, why do a triangle and a stick in a circle indicate "peace"? Where does the smiley face actually come from? Or the power symbol? We sent out the 99PI team to dig into the backstory behind some of those images you see every day. Ubiquitous Icons: Peace, Power, and Happiness

The chili pepper is the pride of New Mexico, but they have a problem with their beloved crop. There just aren’t enough workers to pick the peppers. Picking chili peppers can be especially grueling work even compared to other crops. So most workers are skipping chili harvests in favor of other sources of income. As a result, small family farms have been planting less and less chili every year in favor of other less-labor intensive crops. So, scientists are trying to find ways to automate the harvest, but picking chilis turned out to be a tough job for a robot. How To Pick A Pepper Rose Eveleth’s podcast is called Flash Forward. Subscribe on Apple Podcasts or RadioPublic.