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Blood, concrete, and dynamite: Building the Hoover Dam
lesson duration 05:12
757,061 views
You can only save one— who do you choose?
lesson duration 04:26
1,405,954 views
3 rules for better work-life balance - Ashley Whillans
lesson duration 05:07
452,866 views
Would you raise the bird that murdered your children?
lesson duration 05:19
1,398,937 views
How one of the most profitable companies in history rose to power
lesson duration 05:05
701,884 views
Yes, scientists are actually building an elevator to space
lesson duration 05:19
722,053 views
Why you don’t hear about the ozone layer anymore
lesson duration 08:35
6,723,362 views
Who are you, really? The puzzle of personality - Brian Little
lesson duration 15:16
9,754,158 views
How can we support the emotional well-being of teachers? - Sydney Jensen
lesson duration 11:32
119,438 views
Nature's fortress: How cacti keep water in and predators out
lesson duration 04:20
475,492 views
Ruby Bridges: The child who defied a mob and desegregated her school
lesson duration 09:44
282,042 views
The twins who tricked the Maya gods of death
lesson duration 04:57
1,049,663 views