While air quality in North America and Europe improved over the last decade thanks to stricter environmental regulations, extreme weather and record wildfires have raised new air pollution concerns.

SALT LAKE CITY — It may just look like a haze, but poor air quality is inevitable, especially during the winter. “I think of air quality almost as the silent killer,” said Professor Derek Mallia with ...

Air quality in the United States and Europe improved over the last decade thanks to stricter environmental regulations, but intensifying wildfires raise new air pollution concerns. Stream Connecticut ...

Johannesburg's air quality has never really been measured systematically. Like many other cities across the globe, scientists ...