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Why Big Cities Make Media Liberal

And why the Koch Brothers can't do anything about it, even if they buy up the Tribune papers.

How Sprawl Made This Week's Devastating Midwestern Floods Worse

Spread-out development contributes more rooftops and pavement to the watershed than walkable neighborhoods.

The Best Idea Yet To Get People to Curb Their Junk Food Consumption

Are you listening, Mayor Bloomberg?

In Bangladesh, a Frantic Search for Survivors After a Factory Collapse

At least 70 garment workers have died and scores more were injured when an 8-story building fell down Wednesday morning.

How Toronto's Muslim Community Helped Catch the Would-Be Train Bombers

Religious groups can be capable -- and sometimes incredibly deft -- at policing extremists within their own ranks.

Beijing Residents Can't Escape Dismal Air Pollution

Wildly fluctuating urban air pollution is prompting some residents to seek homes elsewhere. But most Chinese cities suffer similar problems.

Stunning Laser Scans That Could Help Us Reuse Aging Buildings Better

No, these are not renderings.

Skyscraper Trees: Good or Gimmicky?

Debating the merits of planting forests on the sides of tall buildings.

Doctors Now Advise Wearing Helmets During Tornado Warnings

According to new research on injuries sustained during twisters, brain damage and busted spines are common; impalements by flying wood less so.

A Pantone-Style Color Guide for Beers

Now if only they made a corresponding line of beer-colored paints.

What E. L. Konigsburg Taught Me About Cities

The beloved children's book author captured the essence of urban life better than just about anyone else.

Weirdly Catchy Song of the Day: The National Park Week Jingle

If you don't know, now you know.

Expensive Cities Are Even Worse for the Poor Than You Think

How high-income cities make groceries for the low-income more expensive, too.

Everything You Need to Know About Why Chicago Is Furious With Rachel Shteir and The New York Times

An old-fashioned battle over civic character.

How Surveillance Cameras and Civil Liberties Can Coexist

Technology will continue to enhance our ability to monitor public spaces. But cities should seize upon more surveillance cautiously.

New York's Mayoral Hopefuls Highlight Their Green Bonafides

At a forum last night, 8 of the city's 9 candidates tried to sell the crowd on their passion for sustainability (even biking!).

The Faces of New York, Plastered on the Sidewalks of New York

The portraits were taken in a giant photo booth in Tribeca.

Where Kabul Goes to Buy Its iPods

A peek inside the city's unofficial Apple store.

Watch Rio Erase and Rebuild Its Entire Waterfront in 3 Minutes

Urban planning porn for advocates of highway demolition.