Social Behavior

What If Everyone On Earth Lived In One City?

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Here's a fun—or, more likely, terrifying—hypothetical question: What would the world look like if all its inhabitants lived together in a single city? Short answer: cramped. Very, very cramped. This might put it into perspective: If the world's population lived in a city with the population density of New Orleans, Louisiana, this single world city would be about as big as the continental United States. Get even scarier what-ifs in the video below.

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