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05:54 Science & Technology Why no aquarium has a great white shark Lesson duration 05:54 32,301,708 Views
03:48 Linguistics One of the most difficult words to translate... Lesson duration 03:48 2,011,183 Views
06:50 Thinking & Learning What you don't know about who you will become Lesson duration 06:50 847,825 Views
04:39 Geometry How the Königsberg bridge problem changed mathematics Lesson duration 04:39 1,422,495 Views
10:09 Global Economics Why can't we just print money to pay off debt? Lesson duration 10:09 4,187,788 Views
04:32 Health Our natural sleep cycle is nothing like what we do now Lesson duration 04:32 597,053 Views
04:09 Environmental Science Are spotty fruits and vegetables safe to eat? Lesson duration 04:09 796,131 Views
12:21 Psychology How to stay calm when you know you'll be stressed Lesson duration 12:21 18,190,744 Views
03:02 Science & Technology Could You Survive 2.5 Million Years Ago? Lesson duration 03:02 2,749,411 Views
