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03:47 Physical Fitness How playing sports benefits your body ... and your brain lesson duration 03:47 1,709,526 views
05:06 Medical Conditions Is there a disease that makes us love cats? lesson duration 05:06 1,630,954 views
03:51 Design, Engineering & Technology It's not you. Claw machines are rigged. lesson duration 03:51 9,916,845 views
10:52 Philosophy Ralph Waldo Emerson and the Beauty of the Everyday lesson duration 10:52 895,041 views
05:01 Growth & Development The surprising reason you feel awful when you're sick lesson duration 05:01 3,634,824 views
04:17 Performing Arts The physics of the "hardest move" in ballet lesson duration 04:17 2,435,587 views