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Megacities Are Growing So Fast We Need Satellites To Study Them

It's difficult to track the growth of cities across multiple countries in a consistent way—especially considering tools like satellite imagery have only been around for a few decades. But this week, the World Bank Group released the results of an unprecedented, decade-long analysis of one of the world's most… » 1/29/15 10:50am 1/29/15 10:50am