As kids head back to school, it's time to look at the future of education and what people are doing to solve today's biggest problems. Sal Khan discusses how he's reinventing education with more than just online videos. Author Amanda Ripley tackles the increasing fear of many American parents that their kids are falling behind. Psychologist Dave Anderegg gives us his remedy for the problem: stop stigmatizing nerdiness. Plus, we learn about the founder of Montessori Method, and much more.