Wildfires Undo 20 Years of Air Quality Progress in Western U.S.

Wildfires over two decades have severely impacted air quality in the western U.S., increasing health risks and negating efforts to reduce pollution, with a conservative estimate of 670 extra premature deaths per year.

Study finds that fire-prone areas and downwind regions have seen an increase in premature deaths.

You need only to remember last summer’s wildfires in the United States and Canada, which fouled the air from coast to . . .