@CNN: Meet the 11-year-old who created a cheap device to test drinking water for lead, and won a $25,000 science prize https://t.co/fC0OCOnvXD https://t.co/eJ4nS3TkAp

@CNN: Meet the 11-year-old who created a cheap device to test drinking water for lead, and won a $25,000 science prize https://t.co/fC0OCOnvXD https://t.co/eJ4nS3TkAp