These immense sky divots are the result of human activity.
"Urban Gridded Dogtags" take cartographic bling to the next level.
Joseph Boardman on federal funding, long-distance routes, and operating "as a business."
They increase foot traffic, attention, and in some cases, spending.
What we've learned from our 9-month series on tomorrow's urban mobility.
A new report ranks U.S. metros based on how many jobs residents can access by transit during the morning rush.
Examining swelling urban borders over the past 100 years.
This time around, they might actually work.
In every urban demographic group in our State of City poll, the majority commuted by car.
Using "lean" concepts, urban mobility can evolve as rapidly as iPhone apps.
The growing popularity of bike-share represents a shift toward embracing shared-transport networks. But there's a much larger picture to consider.
Two words: balanced transportation.
If Chicago sees Donald Trump as a threat, does that mean it takes its architecture too seriously?
What will services like Bridj, Blackline, and Leap Transit mean for traditional city buses?
If displacement is kept in check, there are great social benefits to reducing household transportation costs.
An exhibit highlighting the city's rich history of architectural innovation also hopes to encourage big new ideas.
Residents fight for the future of what was once called the "Brigadoon of industrial housing."
Going green all the way.
New York and L.A. are losing more Americans than they're gaining, but the flood of immigrants more than makes up for it.