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Mathematics
Can you solve the rogue submarine riddle? Difficulty level: Master
Lesson duration 06:19
Sex Education
How porn changes the way teens think about sex - Emily F. Rothman
Lesson duration 15:13
Psychology
Why rumors about vaccines spread— and how to rebuild trust - Heidi Larson
Lesson duration 16:08
Design, Engineering & Technology
Why are airplanes slower than they used to be?
Lesson duration 04:59