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Why good ideas get trapped in the valley of death— and how to rescue them
Lesson duration 05:10
766,798 Views
1,025,659 Views
1,039,049 Views
319,932 Views
1,505,079 Views
720,220 Views
What it's like to live on the International Space Station - Cady Coleman
Lesson duration 06:17
78,219 Views
1,412,184 Views
1,296,935 Views
441,391 Views
457,125 Views
What it takes to be racially literate - Priya Vulchi and Winona Guo
Lesson duration 12:23
146,138 Views
3,729,978 Views
428,124 Views
The incredible, bendable, twistable, expandable elephant trunk
Lesson duration 05:10
260,091 Views
546,558 Views
386,770 Views
1,367,274 Views
144,800 Views
236,126 Views