From Slate Magazine: When you hear Salman Khan’s story, it sounds like an Internet-age fairy tale, one that goes something like this. Once upon a time, a brainy MIT graduate working as a hedge-fund analyst started tutoring his cousin in math and science online. He decided to make YouTube videos of his tutorials. The videos racked up millions of views and reached audiences around the world, and appreciative students offered stirring testimonials. After three years, the hedge-fund analyst quit his day job to set up an educational nonprofit called The Khan Academy. The mission: provide a world-class education to anyone, anywhere for free. Check out this video of his interview with Slate Magazine.