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Class-Divided Cities: Philadelphia Edition

The ninth in our series exploring the class divides across America's largest cities and metros.

See Japan Through the Eyes of the Country's Most Famous Anime Artists

A new online pop-culture travel magazine out of San Francisco's Japantown interviews artists about their favorite spots back home.

Urban App of the Day: Compare Global Cities on the iPad

See how places compare based on population, household income, and GPD.

Even More Evidence Climate Change Will Hit East Coast Cities Particularly Hard

We could see seven times as many Katrinas every year.

More Crazy Proof Birds Are Evolving to Live With Cars

This latest evolutionary trick by cliff swallows is particularly impressive.

Bloomberg Swaps the War on Soda for the War on Cigarettes

The mayor is pushing a new city law that would force retailers to keep all their cigarettes stocked out of public view

Amazing Views From the Top of the World

Google Street View goes to its most extreme destinations yet: 4 of the planet's highest mountains.

Turning a Persian Rug Into a City

Babak Golkar makes architectural designs out of carpet patterns.

10 Years After the Iraq War, How Has Baghdad Changed?

The city is bustling, with parks and nightclubs, but deep scars remain.

Lessons in Self-Defense for Women, From Tahrir Square

An American Indian woman living in Cairo wants to take what she's learned and bring it back to North American reservations.

The Sequester Is Hitting the Country's Neediest Students the Hardest

Children from poor families and special needs kids are disproportionately impacted by the cuts.

A Pair of Nuts Fly Through Rio de Janeiro's Vertical Labyrinth

Extreme-sports enthusiasts Jokke Sommer and Ludovic Woerth take a hair-raising ride through Brazil's urban jungle.

Why We Just Might Want to Build Skyscrapers Out of Wood

Vancouver-based architect Michael Green is trying to convince the world to construct tall wood buildings.

And the Cities Most in Danger of a Super-Flu Outbreak Are...

Researchers say lethal strains of influenza are most likely to arise next in coastal China, the Nile Delta and elsewhere.

The Economic Case for Rail Subsidies

Service increases may pay for themselves through emissions reductions and safety improvements, even before factoring in congestion.

It's Not Just Overflow—Everyday Leaks From Sewer Systems Lead to Alarming Amounts of Sewage in Our Waterways

And you probably can't even smell it.

Daylight Saving and Crime: The Best #CityReads of the Week

Our weekly roundup of the most intriguing articles about cities and urbanism we've come across in the past seven days.

Best U.S. Cities for St. Patrick's Day? Anywhere But Texas

The Northeast Corridor is, unsurprisingly, the promised land of Irish bars and restaurants.

Promising Film Trailer of the Day: 'Sign Painters'

A city is only as good as its signs.