There is, however, a silver lining: That same increased metabolism of cities is also their great innovation secret. The more people there are in an area, and the more densely they’re networked, the more startups get created and the more patents get filed. Thus, cities might be massive resource drains, but they also create the innovative spark that will likely create the next green revolution. … [Read more...] about By 2050, 70% Of The World’s Population Will Be Urban. Is That A Good Thing?