This slideshow from Popular Science looks at some of the most heavily polluted cities in the world.
"The World Bank estimates that 16 of the world's 20 most polluted cities are found in China's industrial areas."
"In fact, according to a study by Italian environmental group Legambiente, Milan has more smog than any other city in Europe and the continent's second-highest level of ozone. Most of the problem comes from the city's love of driving, but that's changing quickly: Congestion pricing in downtown Milan implemented in January has dropped traffic by 26 percent and, residents hope, will lead to drops in smog as well."
"Pittsburgh recently wrested the title of America's most polluted city from Los Angeles-at least when it comes to short-term particle pollution like soot, aerosols, heavy metals and exhaust. But the city of 335,000, which has transitioned from an industrial town to one of the country's most livable cities, may not be to blame for its bad air. According to some research, much of Pittsburgh's pollution is blown in from factories and power plants in Ohio."
FULL STORY: The World's 10 Worst Cities

Maui's Vacation Rental Debate Turns Ugly
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Planetizen Federal Action Tracker
A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

In Urban Planning, AI Prompting Could be the New Design Thinking
Creativity has long been key to great urban design. What if we see AI as our new creative partner?

Portland Raises Parking Fees to Pay for Street Maintenance
The city is struggling to bridge a massive budget gap at the Bureau of Transportation, which largely depleted its reserves during the Civd-19 pandemic.

Spokane Mayor Introduces Housing Reforms Package
Mayor Lisa Brown’s proposals include deferring or waiving some development fees to encourage more affordable housing development.

Houston Mayor Kills Another Bike Lane
The mayor rejected a proposed bike lane in the Montrose district in keeping with his pledge to maintain car lanes.
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