The Boy Who Changed the World by Andy Andrews and illustrated by Philip Hurst. I really liked the premise of the story. The title names one boy who changes the world but it's actually about 4 people, who, in the end, save 2 billion people from starvation.
In American culture we love the lone hero who sets out alone and gets a job done, or captures the bad guy, or changes history, etc. The message of The Boy Who Changed the World, is that God uses all kinds of people to do awesome things, by both the small and big decisions they make that reflect him. That is a great lesson for kids and adults alike to read and reflect on.