Can we possibly prepare?
The sheer number of households on the planet is now rising much faster than the global population.
Not really, though there are a few exceptions.
It can create a troubling illusion of prosperity.
In the 1830s, there was plenty of green space to go around in New York (and snakes).
The lightning pace of world urbanization is on display in these animated GIFs of Chicago, Dallas/Fort Worth, Hong Kong and other exploding metropolises.
GDP and patents in cities usually grow at a faster rate than population. But why?
Watch the world grow.
Two Yale architects pose the question in an ambitious research project.
The rise in core city populations isn't only happening in large metros.
Urban growth isn't necessarily streaming in from the countryside.
Q&A with Planet of Cities author Shlomo Angel.
Neighborhoods within 2 miles of city hall saw huge jumps in population between 2000 and 2010, according to new numbers from the Census.
Regions where urbanization is likely to increase by 2030, and where it will have the most impact.
Where property abandonment is growing and declining.
Figures from a new report on China's cities show a rapid transformation.
Growth in population and informal settling has increased the flood's toll in Manila.
Water access and infrastructure concerns will only heighten as the country shifts toward an urban majority.
The number of Amish people in the U.S. has doubled in the last 20 years, and the sect is spreading across the United States.