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Scientific American Frontiers
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Alan Alda
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Every Sound a PresentSecond Sight

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Cybersenses Part 1 - Every Sound a Present
Cochlear implants help deaf people hear. Alan checks in with a girl named Kelley several years after her surgery to see how artificial hearing works for her.

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Cybersenses Part 2 - Second Sight
Doctors are working to develop artificial retinas for patients who are blind due to retinal damage. Alan meets one man who has an experimental retinal implant.

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