Khan Academy started when Salman Khan posted a video online to help his 12-year-old cousin pass a math test. Today, Khan has made more than 3,000 videos about topics like organic chemistry and photosynthesis. Khan's videos have been viewed more than 200 million times, and in his new book he talks about how human interaction could be the root to solving America's education crisis.
Salman Khan is a former hedgefund analyst who accidentally fell into teaching with his Khan Academy, an online education platform. In 2012, he was named one of Time magazine's 100 most influential people in the world. He's also the author of "The One World Schoolhouse: Education Reimagined." He spoke at Seattle's Town Hall on February 6, 2013.
VIDEO: Salman Khan's TEDTalk