Scientists estimate that there are over 100,000 intelligent alien civilizations in our galaxy alone—but we’ve never heard anything from any of them. Here are 13 possible explanations for why.
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Wait But Why needs to downsize. Which stick figures will keep their jobs and which will be erased? A puzzle that will keep you busy for awhile.
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If you combine every human’s wealth together, you get $241 trillion. Let’s see what that number looks like in cash, gold, potatoes, pizza, and tortoises.
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