12/18/2013 11:03 am ET

We Now Know Way More About How Mega-Cities Grow Thanks To Facebook


Facebook is so ubiquitous—it has 1.19 billion monthly active users, or more than 15% of the Earth’s population—that it’s possible to detect huge migration patterns from a few snippets buried in its users’ profiles, specifically the huge tide of people moving to mega-cities around world.

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