【TED】Daniel Kish: How I use sonar to navigate the world (Daniel Kish: How I use sonar to navigate the world)

Ever wondered how people navigate without sight? Daniel Kish shares his incredible ability to use echolocation, like a human sonar, to 'see' the world around him! You'll be amazed by this inspiring talk and pick up some fascinating vocabulary related to human echolocation and blindness awareness.