The tiny, high-tech hearing aids Americans can buy are too expensive for most of the estimated 365 million people worldwide with severe hearing loss. Barry Petersen reports on the impact of a low-cost... more 
The tiny, high-tech hearing aids Americans can buy are too expensive for most of the estimated 365 million people worldwide with severe hearing loss. Barry Petersen reports on the impact of a low-cost device that's giving the gift of sound using two technologies common even in the world's poorest countries. less 
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Tue, Dec 24, 2013 8:40 PM EST