An Oxford University lecture on the credit crunch is topping the global iTunes chart for education.

As reported in the Oxford Mail, the university has started posting some of its lectures, videos and audio files on the iTunes site for people to download.

The lecture by Joseph Stiglitz, former vice president of the World Bank and Nobel Prize winning economist, was downloaded 60,000 times in the first week. The second most popular was a Spanish for Beginners lecture.