Dangerous wildfire smoke blankets 19 states, triggers air quality alerts for millions

The status of wildfire smoke as it moves down eastern U.S.

Wildfire smoke kills tens of thousands of people a year. Here's why and what you can do about it

What's making today's wildfires bigger and more severe

Wildfire smoke in Mass.: Where it's coming from, why it makes the sky yellow

Horrific video shows people fleeing deadly Bangkok bar blaze