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How one design flaw almost toppled a skyscraper
Lesson duration 05:16
839,823 Views
309,600 Views
5,032,431 Views
Demolition, disease, and death: Building the Panama Canal
Lesson duration 05:36
1,019,035 Views
1,866,598 Views
830,049 Views
Why are airplanes slower than they used to be?
Lesson duration 04:59
2,446,182 Views
2,472,165 Views
5,372,364 Views
152,124 Views
1,025,021 Views
1,038,687 Views
1,410,547 Views
What it takes to be racially literate - Priya Vulchi and Winona Guo
Lesson duration 12:23
145,995 Views
545,848 Views
386,576 Views
236,065 Views
The material that could change the world... for a third time
Lesson duration 05:27
920,316 Views
How to teach kids to talk about taboo topics - Liz Kleinrock
Lesson duration 12:02
137,251 Views
1,493,917 Views
621,126 Views
2,141,105 Views
692,012 Views