Daniel Kish lost his eyesight when he was 13 months old. For most of his youth, he functioned fine without a walking stick. He mountain bikes. He camps alone. He moves through cities handily. All thanks to advanced echolocation abilities.
Blind superhero Daredevil could identify his surroundings by listening to sounds as they bounced off objects. Now a blind boy in Britain has learned to use echolocation himself, a technique that can be taught to others.