When his cousin struggled in school, Salman "Sal" Khan deicided to help. Since they couldn't get together, Khan tutored her by computer. Soon he posted lessions online for others too. Seeing the need for online learning, he started Khan Academy. Through the academy, Khan continues his quest to provide a world-class education to anyone who wants one.

Who is Sal Khan -- The world of distance learning -- Finding his purpose-- Changing online education-- Khan's impact.