California added 900,000 new jobs during the recovery, but they were spread over the state's 38 million residents.
In part, it's because the roads are less stressful for riders.
About 47 percent of the country is unoccupied.
Istanbul is on pace to become Europe's most populous metro between 2017 and 2018. How will the city handle it?
The U.S. enters 2014 with a brand new population estimate.
An animation of western expansion.
Leigh Gallagher on her new book, The End of the Suburbs: Where the American Dream Is Moving.
NASA tries to answer the question.
Lessons on preserving the urban core from the nation's capital.
New research finds that as population density decreases, the suicide rate among young people goes up.
Spanish researchers are making the case that the world will in fact be less crowded in 2100 than it is now.
Sixty-four cities, 64 populations to rank by size.
You don't need satellite imagery to see how much the city has changed.
This week, 30 million people will gather in Allahabad, India. Among them: Harvard scientists asking how on earth is an event of this size possible?
Homicides were down dramatically in some U.S. cities in 2012, but up in others.
A new study gauges the relative contribution of U.S. metros to population, innovation, and economic growth.
New research says men change their spending habits when they outnumber women.
New data suggests that city population plays little role in frequency of collisions.
Columbia University planning professor David King on why calling the contest is beside the point.