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In 2000 there were only 20,000 .ppt/.edu lectures on the web. We decided to collect only the .edu lectures with the concept that lectures coming from colleges and Universities which are being used for teaching, are likely of excellent quality and are active and vibrant. There has been an enormous increase in English lectures to now over 1,200,000.  Spanish lectures from Spanish sites have started to migrate.  Scientific lectures in Arabic have not as yet been included on the web, but the soon will. The Supercourse of science has harvested all the lectures and classified these according to academic discipline