Troubled by Flint water crisis, 11-year-old girl invents lead-detecting device

To make her device, Rao pressed local high schools and universities to give her lab time and then hunkered down in the "science room" — outfitted with a big white table — that she persuaded her engineer parents to create in their home in Lone Tree, Colo.
To make her device, Rao pressed local high schools and universities to give her lab time and then hunkered down in the "science room" — outfitted with a big white table — that she persuaded her engineer parents to create in their home in Lone Tree, Colo.