99% Invisible

“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. Make your mark. Go to 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. Make your mark. Go to 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. Subscribe to Cautionary Tales on

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.

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. Rose Eveleth’s podcast is called .