April 16 2015 1:59pm

EXTRA: Second Sight

Daniel Kish, one of the world’s leading proponents of the use of echolocation by the blind, is almost entirely self-taught, and he began very young. As he explained in an interview with producer Mia Sheldon, his blindness didn’t deter him from exploring his surroundings in southern California with all the reckless abandon of a curious young boy.

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