Cities around the world trying to limit driving have faced objections — namely that the measures would limit personal freedom ...

P EOPLE ARE dying for clean air. According to the most recent estimates from the Institute of Health Metrics and Evaluation ...

Despite cleaner cars on the road, a University of California, Riverside study shows that higher speed limits make city air dirtier.

Up to one-third of all new asthma cases each year are attributed to the harmful air pollutants that are emitted by ...

“When you’re looking at the various source of pollution, it’s the car ... emissions,” she said. Starting in the 1920s, lead had been blended with gasoline, sending the neurotoxin into the ...

Fires and agricultural soils can rival cars and factories in emitting chemicals that lead to ozone, making it hard to meet air quality standards.

Officials have long required vehicle emissions testing ... and state officials more time to get a handle on the region's air pollution problem. Even so, officials and business leaders know ...

The decision bought officials time to avert economic harm, but raised concern from health advocates about the continued ...

But until now, no emissions market had been tested for particulate matter—one of the most dangerous forms of air pollution, as particles can lodge in the lungs and enter the bloodstream ...