Educational

182 video

If other stars replaced our Sun

What if the Sun were to be replaced by the other stars, like Alpha Centauri, Sirius, Arcturus, Vega, or even Polaris? Incredible Roscosmos (Russian Federal Space Agency) video shows this alternative...

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2 : 12
Why do we cry?

The three types of tears by Alex Gendler

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3 : 59
Indian Headshakes

What Do Indian Headshakes Mean

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1 : 45
The Olympic Diet

The Diet Of An Olympian

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2 : 42
Danger: Humans

Explaining The Dangers Of Humans

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