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TEDTalks (hd)

TED Conferences LLC

Arts, Education, News & Politics, Science & Medicine, Technology

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Education 42

TED is a nonprofit devoted to Ideas Worth Spreading. On this feed, you'll find TEDTalks video to inspire, intrigue and stir the imagination from some of the world's leading thinkers and doers, speaking from the stage at TED conferences, TEDx events and partner events around the world. This podcast is also available in high-def video and audio-only formats.

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Daniel Kish: How I use sonar to navigate the world

March 31st, 2015

Episode 315 of 820 episodes

Daniel Kish has been blind since he was 13 months old, but has learned to “see” using a form of echolocation. He clicks his tongue and sends out flashes of sound that bounce off surfaces in the environment and return to him, helping him to construct an understanding of the space around him. In a rousing talk, Kish demonstrates how this works and asks us to let go of our fear of the “dark unknown.”

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