Nate Berg
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Why Does California's Central Valley Have Such Bad Air Pollution?
The farming communities of the Central Valley breathe some of the worst air in the nation
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Can You Tell if a Street is Safe Just By Looking?
Comparing images of cities and neighborhoods to gather data on perceptions of place
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The 'Fake' Cities of Syria's Unrest
Syrian television alleges the country's uprisings are taking place in cinematic replicas of its cities
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WHO: Iran, South Asia Ranked Worst in Urban Air Pollution
Air quality continues a downward slide worldwide, according to the World Health Organization
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How to Keep High-Speed Rail Alive
Amid disappearing funding, a new report looks at how high-speed rail can still happen in the U.S.
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One Downside to Bicycle Commuting: Biker's Lung
London bike commuters found to breathe in more soot than pedestrians
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The Big Fix
The Math Behind Sacking Disposable Bags
How a variety of policies aimed at reducing the environmental impact of shopping bags are working
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Photos
9 Cool Projects Under Freeway Overpasses
Innovative ways to reuse the empty space beneath overpasses
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Videos
'Helvetica' Director Gary Hustwit Takes on City Design with 'Urbanized'
The new film documents the problems and prospects of global urbanization
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China 'Cancels' an Entire City
Chaohu, population 4 million, technically no longer exists

