Howard Weinstein had a goal in mind - to create a hearing aid that even citizens in the poorest developing nations could afford. Through grants and help from other deaf individuals, now about 20,000 people in 30 countries are now using the Solar Aid. The solar-powered heating device is very similar to a hearing aid in function, enabling the hearing-impaired to listen better to the world around them.
Approximately 250 million people around the world having hearing loss, with about two-thirds of them living in the developing world and most of them do not have the money to buy conventional hearing aids mostly due to the expensive batteries that only last about a week. Having a hearing aid powered by the sun, eliminates the battery issue and helps out so many in need.