Much like bats and dolphins, some people have developed the ability to analyze bouncing sound waves to generate a picture of their environment. Advanced echolocators have shown increased mental activity in parts of the brain usually devoted for vision. | How Human Echolocation Allows People to See Without Using Their Eyes
Human echolocation: Using tongue-clicks to navigate the world
Daniel Kish has been blind since he was a baby but that hasn't stopped him living an incredibly active life that includes hiking and mountain-biking. To do this, he has perfected a form of human echolocation, using reflected sound waves to build a mental picture of his surroundings.
Daniel Kish - an American expert in human echolocation and President of World Access for the Blind, a California-registered non-profit founded in 2000 to facilitate "the self-directed achievement of people with all forms of blindness" and increase public awareness about their strengths and capabilities. Kish and his organization have taught a form of echolocation to at least 500 blind children around the world. Kish, who has been blind since he lost both eyes to retinoblastoma before…