Three summers ago, the Caldor Fire burned its way up the Western Slope into the Tahoe Basin, scorching 221,835 acres. The fire burned for over two months, cloaking the lake and its surrounding ...

Being exposed to lingering fine particulate matter (PM 2.5) from wildfire smoke can have health effects for up to three months afterwards, well beyond the couple of days that previous studies have ...

Whether you live in close proximity to someone who routinely smokes cigarettes or you live in an area affected by wildfires, regular exposure to the microscopic particles found in smoke can have a ...

Just when you thought you could finally enjoy some decent weather, Mother Nature decides to remind you that she’s still the boss. Wildfire smoke from Canadian fires is drifting south like an unwelcome ...

A thick, billowy haze of smoke from wildfires in Canada continues to darken American skies, particularly in northeastern states, triggering air quality alerts and health concerns across the country.

Wildfire smoke is no longer just a short‑lived air quality problem drifting over cities for a few hazy days. New research shows that when these plumes rise high into the atmosphere, they can spawn ...

When the San Francisco Bay Area experienced a record 30 consecutive days of worrisome air quality alerts in August and September, Mary Prunicki began taking blood samples from firefighters. The sky ...

A new NASA-led study helps answer decades-old questions about the role of smoke and human-caused air pollution on clouds and rainfall. Looking specifically at deep convective clouds — tall clouds like ...

As the deadly wildfires that devastated Northern California this month come under control and residents begin the process of rebuilding, one question that lingers is the longer-term health effects of ...