Water Warriors -

Nithya Tammana, an 11-year-old girl from New Jersey built a youth water-conservation network of more than 450 members; her open-source moss filter is designed to remove up to 95% of lead from school drinking water

The 11-year-old designed a nature-inspired filter to remove lead from school drinking water. At nine, Nithya Tammana noticed something happening in her own home that many people might have overlooked:…