Politics thenarwhal.ca B.C. wildfire smoke likely to increase coronavirus death rates, experts warn Wildfires, which are burning hotter and longer due to climate change, decrease air quality and weaken the body's immune response, increasing the risk of developing pneumonia.
Politics www.post-gazette.com Pittsburgh's air quality gets failing grade -- again Air quality is improving but American Lung Association report still ranks Allegheny County and tri-state region air among nation's worst.
