When Canadian wildfire smoke shrouded the New York City skyline and spread to parts of New England this summer, millions of East Coast residents saw firsthand just how pervasive it can be. Now, a new study quantifies exactly what wildfire smoke is doing to hard-fought gains in cleaning up the air,

Since the Canadian wildfires started in late April, the smoke and air quality has started to worsen, before making its way over Kansas. On Sept. 7, the smoke from

A new study finds that smoke from massive wildfires has eroded about a quarter of the air quality gains from the last few decades.

Now, a new study quantifies exactly what wildfire smoke is doing to hard-fought gains in cleaning up the air, even in Eastern states not typically affected by wildfires. “Since 2000, there's been enormous progress on improving air quality throughout much of the contiguous U.