Some blind people are able to use the sound of echoes to "see" where things are and to navigate their environment. Now, a new study finds that these people may even be using visual parts of their ...

Daniel Kish uses echolocation to sense his surroundings. May 26, 2011— -- Daniel Kish was 13 months old when he lost his eyes to cancer, but that didn't stop him from getting around. By making a ...