From a tiny closet in Mountain View, Sal Khan is educating the globe for free. His 1,516 videotaped mini-lectures — on topics ranging from simple addition to vector calculus and Napoleonic campaigns — ...

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Khan Academy: Needless to say, Khan Academy, the US-based non-profit organization and learning portal, has truly revolutionized and redefined education. For the unversed, the online academy helmed by ...