@nprHahna Alexander spent years developing technology to create a shoe that could charge a battery with each step. But when she finally tested her prototype, she quickly discovered that people would rather carry a back-up battery than bother with a self-charging shoe. That was a tough realization.
The failure took her back to the drawing board, redeveloping the shoe to transmit data like GPS, step count, and weather conditions, to the internet. This new shoe could help keep track of troops in battle, or locate rescuers in the field. Failure, Hahna says, ultimately led her to create something better. Follow the link in our bio for the full story. (Credit: @oysterandplanet; @teamtumult | Frederic Siegel for NPR)