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5 Sustainable Infrastructure Projects Other Cities Might Want to Copy

BRT-Lite in Lagos, zero-carbon in Masdar, recycling in Curitiba, and more.

In Praise of the Stockholm Subway's Breathtaking Art

Think of it as the world's largest public art exhibit.

Are 'Lockdowns' the New Standard?

There's a lot we still need to know about the strategic decisions that led authorities to shut down Boston for a manhunt.

East Coast Cities at Risk in Future Tsunamis

If a major tsunami were to occur off the Atlantic coast, cities from New England to New Jersey could be hardest hit.

Homer Simpson Would Approve of This Doughnut-Shaped Bicycle

Mmmmmm... doughnut bikes.

The Psychology of a Citywide Lockdown

People around Boston didn't stay inside Friday because the city forced them to. And this distinction matters.

'We Cannot Continue to Lock Down an Entire City'

Boston lifts its "shelter in place" order with the remaining suspect still at large.

How Much Will the Boston Lockdown Cost?

The estimates at this early stage vary widely.

Meanwhile, in West, Texas: An Entire Town Must Dig Out From Rubble

Let's not forget about the victims of this week's other major explosion.

Boston Is One of the Best Prepared U.S. Cities to Handle a Crisis

The city conducted vivid, citywide disaster simulations in 2011 and 2012.

Cambridge, Mass.: A Refugee Magnet

29 percent of the city's population is foreign born.

Scenes From Inside a City on Lockdown

Boston area residents are holding their breath.

The Geography of the Boston Marathon Manhunt

Much of last night's action took place in Cambridge and Watertown, a western suburb of Boston.

It's Almost Impossible to Put an Entire U.S. Metro Area on Lockdown

Boston area residents and business owners are being asked to "shelter in place" during this morning's manhunt. But what does that look like?

How the Decline of the Traditional Workplace Is Changing Our Cities

The rise of smart phones and WiFi mean we can now work from anywhere. Should that turn the entire built environment into an office?

Boston, Suburbs on Lockdown; a 'Terrifying Scene'

All transit has been suspended; residents urged to remain in their homes. Police are conducting a door-to-door manhunt for second bombing suspect.

Superstorm Sandy Was So Powerful the Ground Shook in Seattle

Earthquakes aren't the only thing to make the earth shiver.

Photo or Painting? With These Cityscapes, It's Almost Impossible to Tell

British painter Nathan Walsh brings a photo-realism style to urban landscapes.

Stark Stat of the Day: 47,000 Pedestrians Were Killed Between 2001 and 2010

Nearly 70 percent of those fatalities were men; people over 75 were also at higher risk of getting hit.