Wildfire smoke contains tiny PM2.5 particles that can pose serious health risks. Here's how you can compare prolonged smoke exposure to smoking cigarettes and what it means.

Add Yahoo as a preferred source to see more of our stories on Google. Smoke from Canadian wildfires triggered air quality alerts in more than a dozen U.S. states on Wednesday, with health officials warning people in sensitive groups, such as children ...

Wildfires are becoming more frequent and more severe — and where there’s fire, there’s smoke. That smoke can travel thousands of miles. As more people are exposed to wildfire smoke, researchers are only just beginning to understand how it harms our ...

Keith Bein is a storm chaser—or whatever the wildfire equivalent of that is. An air-quality researcher at UC Davis, he drives toward fires, grabbing air samples, analyzing some on the scene and transporting others back to a lab for assessment. He knows ...

Many communities in Arizona, Michigan, Illinois, New York and across North America are experiencing poor air quality due to numerous wildfires. Here's how to guard yourself against it. Macy is a writer on the AI Team. She covers how AI is changing daily ...