This $1 Hearing Aid Could Treat Millions With Hearing Loss

Source: Science »

As an undergraduate in Mumbai, India, Saad Bhamla wanted to do something nice for his maternal grandparents: Buy them a pair of hearing aids. But the prices were shockingly high—and far beyond his means. Now, 15 years later, the bioengineer has invented a device to help grandparents across the globe: a do-it-yourself hearing aid made from…

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