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04:13 History Why do Americans and Canadians celebrate Labor Day? Lesson duration 04:13 Manage Library 539,127 Views
03:45 Earth and Space Science Four ways to understand the Earth's age Lesson duration 03:45 Manage Library 659,520 Views
03:55 Psychology What is déjà vu? What is déjà vu? Lesson duration 03:55 Manage Library 4,959,971 Views
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09:34 Philosophy & Religion On reading the Koran - Lesley Hazleton Lesson duration 09:34 Manage Library 1,541,094 Views
01:55 Linguistics Mysteries of vernacular: Bewilder Lesson duration 01:55 Manage Library 59,613 Views
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04:25 Earth and Space Science The Arctic vs. the Antarctic Lesson duration 04:25 Manage Library 4,549,664 Views
05:15 Health What's wrong with our food system - Birke Baehr Lesson duration 05:15 Manage Library 113,367 Views
09:22 Health Protecting the brain against concussion - Kim Gorgens Lesson duration 09:22 Manage Library 18,973 Views
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04:39 Psychology Should you trust your first impression? Lesson duration 04:39 Manage Library 3,113,381 Views
04:47 Earth and Space Science Who won the space race? Lesson duration 04:47 Manage Library 1,591,535 Views
04:46 Design, Engineering & Technology A brief history of video games (Part I) Lesson duration 04:46 Manage Library 1,214,536 Views
15:35 Data Analysis & Probability The good news of the decade? - Hans Rosling Lesson duration 15:35 Manage Library 31,259 Views
05:02 Public Health Why do we have to wear sunscreen? Lesson duration 05:02 Manage Library 2,288,822 Views