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Science & Technology
The genes you don't get from your parents (but can't live without)
lesson duration 05:03
1,625,322 views
367,312 views
614,679 views
1,012,892 views
Mathematics
Can you solve the rogue submarine riddle? Difficulty level: Master
lesson duration 06:19
1,078,819 views
1,390,666 views
2,190,968 views
588,510 views
33,785,673 views
Psychology
2 questions to uncover your passion — and turn it into a career - Noeline Kirabo
lesson duration 11:07
218,871 views
688,833 views
528,492 views
Sex Education
How porn changes the way teens think about sex - Emily F. Rothman
lesson duration 15:13
595,783 views
3,115,740 views
541,259 views
1,665,740 views
468,255 views
310,129 views