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Yes, scientists are actually building an elevator to space
Lesson duration 05:19
776,066 Views
8,295,701 Views
768,011 Views
532,506 Views
1,043,994 Views
518,015 Views
Can you solve the rogue submarine riddle? Difficulty level: Master
Lesson duration 06:19
1,242,568 Views
36,388,625 Views
How porn changes the way teens think about sex - Emily F. Rothman
Lesson duration 15:13
602,416 Views
315,586 Views
889,013 Views
2,823,782 Views
791,239 Views
The paradox at the heart of mathematics: Gödel's Incompleteness Theorem
Lesson duration 05:20
3,374,071 Views
3,110,763 Views
6,010,171 Views
1,352,694 Views
4,837,330 Views
1,218,455 Views
2,359,965 Views
2,159,015 Views
Why rumors about vaccines spread— and how to rebuild trust - Heidi Larson
Lesson duration 16:08
23,133 Views
How to let go of being a "good" person — and become a better person - Dolly Chugh
Lesson duration 11:49
665,321 Views