For as long as she can remember, 14-year-old Anna Du has had a deep love for the ocean. One day while collecting sea glass, Anna had an epiphany about how much plastic was polluting it. And she got to work. Since her realization Anna has developed an underwater robot that can detect microplastics deep in the ocean, started developing a model to predict where plastic pollution will occur, and written a book about her journey. Did we mention she’s 14?