457,097 views
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388,187 views
27,378,876 views
Thinking & Learning
Can you survive the creation of the universe by solving this riddle?
lesson duration 06:24
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601,357 views
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Science & Technology
The untapped genius that could change science for the better - Jedidah Isler
lesson duration 13:43
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Design, Engineering & Technology
How do jetpacks work? And why don't we all have them?
lesson duration 05:03
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