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981,451 Views
Why good ideas get trapped in the valley of death— and how to rescue them
Lesson duration 05:10
766,763 Views
1,025,482 Views
1,038,941 Views
319,841 Views
1,504,716 Views
719,961 Views
What it's like to live on the International Space Station - Cady Coleman
Lesson duration 06:17
78,212 Views
1,411,619 Views
1,296,477 Views
441,331 Views
457,092 Views
What it takes to be racially literate - Priya Vulchi and Winona Guo
Lesson duration 12:23
146,122 Views
3,729,773 Views
427,942 Views
The incredible, bendable, twistable, expandable elephant trunk
Lesson duration 05:10
260,061 Views
546,365 Views
386,726 Views
1,367,019 Views
144,796 Views
236,111 Views
660,095 Views