Is iTunes U for You?

Jeffrey Selingo:

In an empty classroom on the campus of the Massachusetts Institute of Technology, Walter H.G Lewin, a physics professor, is practicing one of his lectures on the science of everyday phenomena.
Lewin has been teaching at MIT since the 1960s, and his courses are legendary among generations of students there. But he wants to get this lecture — where he dives into the science of rainbows, musical instruments and pacemakers — exactly right. The audience is not just his students at MIT. It could be anyone around the world with access to a computer and Apple’s iTunes store.
MIT is one of 28 colleges that have posted courses, campus speeches and other events on a section of iTunes known as iTunes U. Since the site was launched last spring with 16 institutions, material from it has been downloaded more than 4 million times.
Unlike other offerings from Apple’s music store, where songs cost 99 cents, everything on iTunes U is free. Penn State University offers instruction on information management. Users can download a general chemistry class from Seattle Pacific University, a lecture on the psychosocial aspects of health care from Northeastern University or a class on Ben Franklin from Stanford University. (No universities in the Washington area participate.)