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Olympics 2012
Number of the Day: 23,700
The estimated number of security personnel needed for the London Olympics.
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Videos
Europe's Most Irritating Public Artist
Many urban dwellers would no doubt like to give Austrian artist Michael Heindl a piece of their minds.
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Maps
The Rise of the Super Commuter
The number of people who work in a different city than they live is growing rapidly.
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Sleek, Redesigned London Bus Gets Off to an Awkward Start
The U.K.'s first "Boris Bus" hit the streets yesterday, then broke down and had to be "rebooted."
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Urban Wonk
How More Expensive Housing Can Actually Cost You Less
An expansive new database could change the way Americans think about where we can afford to live.
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Postcard
Postcard From Warsaw
A monument to 22,000 massacred Poles is looking for a new home, and other news.
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The Worst Public Bathroom in New York
Plans to renovate the New York Public Library best not overlook the loo.
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Videos
A Tilt-Shift Video of Rio de Janeiro's Carnival
A dramatic glimpse of Rio's vibrant street culture, in miniature.
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Rankings
The World's Best Cities for Students
If you're in college, these are the cities where you want to be.
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The Secret Life of India's Slums
What Katherine Boo's new book teaches us about the country's sky-rocketing inequality.

