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Daniel Kish has been blind since infancy.
Now 44, Kish mountain bikes, hikes through the wilderness solo and tackles food creations in the kitchen. He can even detect buildings and objects in the distance.
Kish "sees" with his ears, illuminating his world with sound. He describes the technique as "FlashSonar," which is similar to the way bats use sound do to navigate in darkness.
Watch how seeing with sound works below.