Do Cities Really Take the Lead on Climate Change?
They may tend to adopt easier policies first, according to a new report.
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Postcard
The World's Biggest Pop-Up City
As many as 100 million people could gather for Kumbh Mela in the northern Indian city of Allahabad.
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Citizen-Centered Services
In cities across the country, social-service organizations are focused on breaking down operational barriers and bringing benefits together across overlapping agencies.
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UNICEF Wants Us to Talk About Urban Inequality
An online forum invites insight from the people who work on the ground in the world’s biggest and most dysfunctional cities.
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Charts
A Breakdown of What Exactly Is in Beijing's Filthy Air
Climate Desk lays out the contents of China's air pollution.
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Photos
NASA Satellite Image Shows Beijing Drowning in a Lake of Smog
Air pollution has been particularly bad in China this week, with levels nine times above what the U.S. considers "unsafe."
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The Big Fix
Would More Drivers Use Mass Transit if It Mimicked Private Cars?
Personal Rapid Transit tries for a comeback.
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Maps
What Flickr Can Teach Us About the Way We Photograph Cities
Maps of data offer a precise understanding of the where we shoot different landmarks.
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Videos
Replica of the Day: Cities Made of Toothpicks
Toothpick cities, two ways.
