UC Scout is the online high school developed by the University of California. This video is one of over 30 modules developed for the AP Bio online course. The production workflow starts with the instructor reading this entire scripted module in front of a green screen. In post production backgrounds are inserted for much of the lecture along with full screen grfx, animations from NASA and other sources, and still photographs. Music is inserted and all audio is then sweetened. See a ‘before and after’ version of a typical module here.