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Blood, concrete, and dynamite: Building the Hoover Dam
lesson duration 05:12
757,760 views
You can only save one— who do you choose?
lesson duration 04:26
1,408,870 views
3 rules for better work-life balance - Ashley Whillans
lesson duration 05:07
454,050 views
Would you raise the bird that murdered your children?
lesson duration 05:19
1,405,435 views
How one of the most profitable companies in history rose to power
lesson duration 05:05
702,371 views
Yes, scientists are actually building an elevator to space
lesson duration 05:19
722,380 views
Why you don’t hear about the ozone layer anymore
lesson duration 08:35
6,746,387 views
Who are you, really? The puzzle of personality - Brian Little
lesson duration 15:16
9,781,114 views
How can we support the emotional well-being of teachers? - Sydney Jensen
lesson duration 11:32
119,549 views
Nature's fortress: How cacti keep water in and predators out
lesson duration 04:20
475,880 views
Ruby Bridges: The child who defied a mob and desegregated her school
lesson duration 09:44
282,381 views