Wildfire smoke is no longer just a short‑lived air quality problem drifting over cities for a few hazy days. New research ...

California, home of the freeway and the car-based lifestyle, has long struggled with air pollution — and been a pioneer in cleaning up the air, for example in vehicle emission standards. But in recent ...

Wildfires in the western United States are getting bigger, stronger, and worse as climate-fueled drought and unprecedented heat push them to new extremes. But their impact isn’t just confined to the ...