Tammy Duckworth @SenDuckworth
Gitanjali recognized lead testing wasn't "a reliable process & [she's] got to do something to change" it — a role m… https://t.co/B4uDYY9epk — PolitiTweet.org
NPR @NPR
Unimpressed by existing options, the 11-year-old girl invented a portable, efficient device to test water for lead https://t.co/k2Hg7cOKgh