@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
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 http://pic.twitter.com/eJ4nS3TkAp
— CNN (@CNN) November 28, 2017