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"Daniel Kish Is A Blind Man Had To Have His Eyes Removed Before He Was 13 Months Old Because Of Eye Cancer"
"He's mastered the ability of echolocation by clicking his tongue and listening to the echoes. He can ride his bike in traffic, recognize a building from as far away as 1000ft, differentiate specific kinds of cars. He is able to live a relatively normal life.Kish and his organization have also taught a form of echolocation to at least 500 blind children around the world."