The purpose of science and mentorship

"I don't think there should be an age barrier to solving problems," says 13-year-old inventor and scientist Gitanjali Rao. She shares two of her most recent prototypes -- a lead detection device for water and a drug addiction indicator -- and emphasizes the importance of mentors and how they've helped her come far in her already award-winning career. "I hope with the right focus and approach to continuous learning, we can all be superheroes saving lives," Rao says.