And other civics lessons from Reykjavík's unconventional former mayor.
A Brooklyn group tracked the history of the city's urban-renewal projects—and gave some still-vacant spots a future.
"It's going to take 20 to 30 years to catch up with pent-up demand."
"I'm terrified when I walk," says one researcher.
This isn't the first fight to save a historic piece of advertising, and it won't be the last.
"It's very hard for people to realize ... but this is the result of planning."
A package of legislation passed late last week, including "Cooper's Law," shows the city is finally getting serious about reducing traffic fatalities.
In an initial study, researchers found a large disparity.
Memorial Day weekend is a bad time to drive overall.
A New Yorker's first impressions of the 9/11 Memorial Pavilion.
Between 2003 and 2012, 47,025 pedestrians were killed by drivers in the United States.
Mayor Rahm Emanuel banned new or expanded refineries that produce the stuff, but the Southeast side is still dealing with what's already there.
Photographer Aaron Rose spent a lifetime hiding in plain sight.
Men who ride bicycles share their stories.
Mike Simons of the Tulsa World is traveling on foot in the parts of his city that most people drive through as fast as they can.
"It's the holy grail for architects."
Tips from an exasperated New York City bike mechanic.
The key is density, and locating schools in the town's core.
Used well, it could serve as a powerful example of a city's ability to mine the collective knowledge of its residents for good.