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Blood, concrete, and dynamite: Building the Hoover Dam
Lesson duration 05:12
891,420 Views
1,951,712 Views
672,338 Views
703,537 Views
2,077,751 Views
2,378,576 Views
How one of the most profitable companies in history rose to power
Lesson duration 05:05
789,502 Views
Yes, scientists are actually building an elevator to space
Lesson duration 05:19
775,185 Views
8,276,036 Views
528,435 Views
11,643,815 Views
333,275 Views
648,261 Views
762,215 Views
How can we support the emotional well-being of teachers? - Sydney Jensen
Lesson duration 11:32
144,612 Views
2,461,878 Views
Nature's fortress: How cacti keep water in and predators out
Lesson duration 04:20
548,517 Views
368,172 Views
1,516,445 Views
Ruby Bridges: The child who defied a mob and desegregated her school
Lesson duration 09:44
376,135 Views
1,623,621 Views
434,342 Views
156,629 Views