Here's one good use for plastic: Medical devices. At UMass-Lowell, plastics engineer Erin Keaney decided to re-imagine the artificial limb after learning that much of the world's amputees couldn't afford high-cost prosthetics. In this inspiring podcast, listen to how 29-year-old Keaney has developed a patented prosthetic that is changing amputees' lives in India, Rwanda and the Philippines. She and classmate Jonathan de Alderete have raised $1 million for Nonspec.
