Grace O’Brien’s motto has always been, “I don’t know what I want to be, but I want to be something great. Meaning, I want to make sure that whatever I choose to do, it’s making a positive impact.”

So far, the 18-year old Stanford freshman is off to a pretty good start. At 14, she founded the nonprofit Ears for Years, which has supplied hundreds of low-cost, solar-powered hearing aids to children in developing countries. And O’Brien has already received national attention as one of the 2015 winners of the Gloria Barron Prize for Young Heroes.

Source: Solar-Powered Hearing Aids Are Music to the Ears of Kids Around the World