From his heart to his hands, Gabriel Tenorio is always making music. “I can’t stop hearing it,” he said. “I can’t stop hearing my memories.” For as long as he can remember, the Boyle Heights native ...

KALAMAZOO -- When Janice Newton, 67, of Kalamazoo, watches musicians on TV or attends a concert, she often wonders about their guitar strings. Just possibly, she had a hand in making those strings.

Forbes contributors publish independent expert analyses and insights. Tim Newcomb covers tennis gear/business, stadiums and sneaker tech. Sheep intestine launched the technological advancements of ...