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natpkg.orig.blind.echolocation.poptech_00015325

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    Human echolocation lets blind man 'see'

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Human echolocation lets blind man 'see'

Can a series of sounds help a blind man, in a sense, see? Daniel Kish takes CNN on a road-test of his echolocation.

Human echolocation lets blind man 'see'

Can a series of sounds help a blind man, in a sense, see? Daniel Kish takes CNN on a road-test of his echolocation.