Without a question, we are living in an urban era. More people now live in cities than anywhere else on the planet and I’ve repeatedly argued that cities are our most important economic engine. As a result of these shifts, we’re seeing megacities at a scale the world has never seen before.
As our cities have massively expanded in the last 70 years, so has the ecological footprint of these metropolitan areas. This article discusses some of the challenges confronting megacities and their functions within the global urban network.