Teen Innovators: Nine Young People Engineering a Better World with Creative Inventions

"Twelve-year-old Gitanjali Rao, appalled by the tragedy in Flint, Michigan, found a cheaper, more effective way to test for lead in drinking water. Four undocumented teenagers from an underfunded high school in Phoenix built an underwater robot from spare and found parts. Substituting hard work and creative thinking for money and expensive equipment, they won a national robotics competition, beating a well-funded team from MIT. At fifteen, William Kamkwamba used materials from junkyards nea...