Inventor and author William Kamkwamba, and serial entrepreneur Tom Rielly are the co-founders of Moving Windmills Project, an NGO empowering young change-makers in rural Malawi. William and Tom join Elliot to talk about William's incredible journey from being been forced - aged 14 - to drop out of school during a famine, and how his attempts to solve his family’s problems by building his own windmill,  led to his story being adapted into a book, a film and now a musical theatre show.