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05:21 Linguistics Are Elvish, Klingon, Dothraki and Na’vi real languages? Lesson duration 05:21 2,918,503 Views
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10:16 Earth and Space Science Questioning the universe - Stephen Hawking Lesson duration 10:16 86,057 Views
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15:28 Social Studies America's native prisoners of war - Aaron Huey Lesson duration 15:28 124,308 Views
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03:47 Numbers & Operations A trip through space to calculate distance Lesson duration 03:47 155,523 Views