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3 bizarre (and delightful) ancient theories about bird migration
Lesson duration 05:42
363,487 Views
292,537 Views
This thought experiment will help you understand quantum mechanics
Lesson duration 04:59
293,566 Views
Building the world's largest (and most controversial) power plant
Lesson duration 05:38
957,042 Views
3,108,332 Views
663,912 Views
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614,457 Views
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2,154,358 Views
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952,397 Views
How we can face the future without fear, together - Rabbi Lord Jonathan Sacks
Lesson duration 12:37
255,460 Views
1,174,064 Views
766,354 Views
How do steroids affect your muscles— and the rest of your body? - Anees Bahji
Lesson duration 05:49
3,485,522 Views
3 questions to ask yourself about everything you do - Stacey Abrams
Lesson duration 12:39
1,434,288 Views
333,107 Views
2,652,881 Views
744,980 Views
1,066,286 Views