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Science & Technology
The genes you don't get from your parents (but can't live without)
lesson duration 05:03
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366,385 views
613,883 views
1,007,240 views
Mathematics
Can you solve the rogue submarine riddle? Difficulty level: Master
lesson duration 06:19
1,073,077 views
1,384,463 views
2,179,546 views
586,895 views
33,698,588 views
Psychology
2 questions to uncover your passion — and turn it into a career - Noeline Kirabo
lesson duration 11:07
218,581 views
687,880 views
526,439 views
Sex Education
How porn changes the way teens think about sex - Emily F. Rothman
lesson duration 15:13
595,444 views
3,111,011 views
540,828 views
1,656,154 views
467,820 views
309,970 views
826,684 views
1,142,681 views