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Learn moreBlood, concrete, and dynamite: Building the Hoover Dam
lesson duration 05:12
757,061 views
How one of the most profitable companies in history rose to power
lesson duration 05:05
701,884 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
The Norse myth that inspired “The Lord of the Rings”
lesson duration 05:25
1,649,783 views
Why is this 2,500 year old shipwreck so well-preserved?
lesson duration 04:47
406,143 views
The infamous overpopulation bet: Simon vs. Ehrlich
lesson duration 04:48
509,785 views