His name is William Kamkwamba, and his story is nothing short of remarkable. Using scraps from a local junkyard in Malawi, he created something that harnessed the wind - and changed his life. The villagers thought he was crazy, but when the lights went on, the world noticed. Far off the electric grid, three windmills rattle in the breeze, producing enough electricity to provide indoor and outdoor lighting, and to pump water. The windmills are the legacy of a rickety prototype conceived by William Kamkwamba, a desperate teenager with big dreams.