Smoke from wildfires in Canada has spread more than 5,000 miles, reaching parts of Russia and Europe during the past week.

Three leading European Union lawmakers on Friday expressed their "heartfelt solidarity" with those affected by sweeping ...

Smoke from Canadian wildfires worsened air quality in the eastern U.S. on Wednesday as several Midwestern states battled ...

In an ominous reminder of the summer of 2023, Canada’s worst wildfire season on record, smoke from the wildfires has been ...

About 200 fires are actively burning in Canada and have consumed about 19,900 square kilometres of terrain, most of it in the ...

Iowans — especially those with heart and lung disease — should avoid long or intense activities and take extra breaks during strenuous activity outdoors in areas where air quality is rated unhealthy.

Plumes of smoke are blanketing large swaths of the U.S. and parts of Europe, which presents risks for those breathing it. The ...

Canada is having another bad wildfire season, and more than 27,000 people in three provinces have been forced to evacuate.

Fluorescence lidar technology enables a better determination of the origin of particles in the atmosphere. The method can ...