What if you put all 7 billion humans into one city, a city as dense as New York, with its towers and skyscrapers? How big would that 7 billion-sized city be? As big as New Jersey? Texas? Bigger? Are cities protecting wild spaces on the planet?

Seth Dixon, Ph.D.‘s insight:

This NPR article pulls together some great images of dense urban housing as well is some stellar infographics to show the importance of cities to a growing global population. 

Tags: density, sustainability, housing, urban, planning, unit 7 cities. 

See on www.npr.org