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a nice tutorial for syncing webpage events with embedded youtube videos.

The lecture hall is under attack. Science, math and engineering departments at many universities are abandoning or retooling the lecture as a style of teaching, worried that it's driving students away. The faculty at Johns Hopkins University in Baltimore has dedicated this academic year to finding alternatives to the lecture in those subjects. Johns Hopkins, Harvard University and even the White House have hosted events in which scholars have assailed the lecture.