Wildfires are releasing a...

Wildfires can impact air quality a continent away, says UN weather and climate agency.

Wildfires can impact air quality a continent away, says UN weather and climate agency.

Wildfires release a "witches' brew" of pollutants that can wreck air quality even a continent away.

Wildfires release a "witches' brew" of pollutants that can wreck air quality even a continent away.

Wildfires are releasing a risky mix of pollutants that can end up damaging air quality, according to a report from the UN weather agency. It said that...

Global air pollution is worsening, with the United States and Canada experiencing the sharpest increases due to record-breaking, climate-supercharged...

Global air pollution is worsening, with the United States and Canada experiencing the sharpest increases due to record-breaking, climate-supercharged...

Global air pollution is worsening, with the United States and Canada experiencing the sharpest increases due to record-breaking, climate-supercharged...

A new report released today found that, while globally air pollution levels were somewhat flat, Canada experienced its worst pollution since 1998,...