When Ben Underwood became blind at the age of two, anyone would have thought he faced a life full of hardship and uphill challenges-a world full of things he'd never be able to see and activities he'd never be able to enjoy. But as far as his mom, Aquanetta Gordon, was concerned, nothing was impossible for Ben . . . and so he accomplished the incredible. Known as "the boy who could see with sound," Ben mastered human echolocation-the ability to detect...