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18:46 Business & Economics The walk from "no" to "yes" - William Ury Lesson duration 18:46 36,950 Views
09:22 Health Protecting the brain against concussion - Kim Gorgens Lesson duration 09:22 20,068 Views
03:15 Physical Science The science of macaroni salad: What's in a molecule? Lesson duration 03:15 326,776 Views
03:14 Social Studies Labor Day: Is it really a necessary holiday? Lesson duration 03:14 318,831 Views
04:46 Design, Engineering & Technology A brief history of video games (Part I) Lesson duration 04:46 1,289,017 Views
15:35 Data Analysis & Probability The good news of the decade? - Hans Rosling Lesson duration 15:35 32,555 Views
15:15 Mathematics A performance of "Mathemagic" - Arthur Benjamin Lesson duration 15:15 1,787,043 Views
05:39 Science & Technology 300 years of fossil fuels in 300 seconds Lesson duration 05:39 1,832,907 Views
06:51 Science & Technology The Higgs Boson -- a hero or a villain? Lesson duration 06:51 3,297,117 Views
06:21 Science & Technology The beloved Brontosaurus and naked T-rex Lesson duration 06:21 9,071 Views
