10:21What If WE Are The Aliens?
動画
10:21
8:07If Everyone Had a Million Dollars, Here's What Happens
What would actually happen if everyone on Earth suddenly became a millionaire? At first, it sounds like a dream — no…
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10:23What's Hiding In The Dark??
This video describes why ancient humans were afraid of dark , just like you.
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9:43
6:19