Chronicle: For the past four years, Salman Khan has been posting brief video lessons to what he calls the Khan Academy on YouTube, the video-sharing site. The lessons are popular. Hundreds of thousands of people have viewed them. A former financial analyst, Khan focused first on math and other topics he knows best. Now, he teaches about topics he’s had to learn about himself, such as entropy. A news story by the Chronicle‘s Jeffrey Young examines the Khan Academy and its implications for online education.
