i'll talk to "the new yorker's" beijing reporter evan osnos about the political tumult in china ahead of the upcoming anointment. also i'll talk to the education innovator sal khan, the founder of khan academy about how best to teach our kids. >>> and what does a company with almost 700 planes and tens of thousands of trucks worry about? fuel. i'll sit down with fedex ceo fred smith to talk about the future of energy. that crucial subject, the future of energy, is also at the heart of our latest gps special, which airs tonight at 8:00 and 11:00 p.m. eastern and pacific. in "global lessons: the roadmap for powering america" will take you around the world to bring you ideas about energy back home. >>> but first here's my take. the second presidential debate has been studied and analyzed mostly as a prize fight. who punched hard, who missed a swing. that's fine. but there was a substantive aspect to the debate as well. president obama actually showed up this time, and he was engaged and articulate, as was governor romney. as a result, we got a sense of the issues, and there is an importa