While pollution from vehicle exhausts has been known for some time to exacerbate the symptoms of asthma, a new study published in the European Respiratory Journal establishes for the first time the direct causal link between the two.
"Traffic pollution is a known trigger of asthma symptoms, but a new study suggests a much more direct link: European researchers say that traffic pollution may cause 14 percent of childhood asthma, putting it on par with second-hand smoke," writes
As the study's lead author, Dr Laura Perez, explained to the European Lung Foundation:
Air pollution has previously been seen to trigger symptoms but this is the first time we have estimated the percentage of cases that might not have occurred if Europeans had not been exposed to road traffic pollution. In light of all the existing epidemiological studies showing that road-traffic contributes to the onset of the disease in children, we must consider these results to improve policy making and urban planning.
FULL STORY: Does Traffic Pollution Cause Asthma?

Planetizen Federal Action Tracker
A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

Congressman Proposes Bill to Rename DC Metro “Trump Train”
The Make Autorail Great Again Act would withhold federal funding to the system until the Washington Metropolitan Area Transit Authority (WMATA), rebrands as the Washington Metropolitan Authority for Greater Access (WMAGA).

The Simple Legislative Tool Transforming Vacant Downtowns
In California, Michigan and Georgia, an easy win is bringing dollars — and delight — back to city centers.

The Small South Asian Republic Going all in on EVs
Thanks to one simple policy change less than five years ago, 65% of new cars in this Himalayan country are now electric.

DC Backpedals on Bike Lane Protection, Swaps Barriers for Paint
Citing aesthetic concerns, the city is removing the concrete barriers and flexposts that once separated Arizona Avenue cyclists from motor vehicles.

In These Cities, Most New Housing is Under 441 Square Feet
With loosened restrictions on “micro-housing,” tiny units now make up as much as 66% of newly constructed housing.
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