In recent days, the air quality index has been at "Unhealthy" levels in New York City from the Canadian wildfires smoke. People have been warned to avoid outdoor physical activities. Those who spend ...

Air pollution processes encompass a range of chemical, physical, and biological transformations that occur in the atmosphere as pollutants are emitted from a variety of sources – including industrial, ...

CPR News conducted air quality testing for two days in February and June 2023. For the first, we rented a pair of handheld sensors that detect and count ultrafine particles emitted from vehicles. We ...

Smoke from wildfires in Canada has drifted into the U.S., prompting air quality alerts for Americans as it continues to spread. But when officials and forecasters classify a city's air as "unhealthy" ...

After wildfires burn through urban areas, publicly available air quality assessments may not adequately warn people about harmful air pollutants. Expanding today’s air quality metrics requires more ...

We envision our homes as refuges from the outside world, including all the allergens and pollution in the air. And while it’s true that they block some of the worst excesses of outdoor pollution, they ...

If you’ve been obsessed with air quality since the sky turned orange this summer, Eli Dueker, co-director of Bard College’s Center for Environmental Sciences and Humanities, understands. But he’s not ...

A researcher in protective gear collects samples from a Topanga home burned in the Palisades fire. (Nicholas Spada, UC Davis) While the fires that devastated Los Angeles in January are now contained, ...

That’s how one air quality expert describes the current public health situation in Los Angeles, where thousands are coping with destruction wreaked by the Palisades and Eaton fires. Together, the ...

The Graded Response Action Plan, or GRAP, is a set of incremental anti-pollution measures that are triggered to prevent ...