How the country revived its go-getting spirit  May 12th 2024|Greenville, South CarolinaPearls, it is said, represent purity. They may soon stand for something else: business dynamism. In Greenville, South Carolina, two locals have created earrings that look like jewels, but contain a cluster of microelectronics to track body temperature, heart rate and even the wearer’s menstrual cycle. Incora Health was established in 2022. It plans to start selling its earrings, currently in clinical trials, i...