Mothers of invention

摘要

Last year, Jessica 0. Matthews and Julia Silverman gave social enterprise a new spin that would show the planet how doing good and doing good business didn't have to be mutually exclusive. The young women met three years earlier as juniors at Harvard University. Aspiring social scientists with no engineering know-how, they teamed up on a class project that ultimately morphed into a useful invention-a soccer ball that's also a portable, eco-friendly energy generator.