North America wildfires explained: North America faces an intense fire season with millions of acres already burned. Climate change drives increased heat and drought, fueling destructive wildfires across regions. Smoke from Canadian fires has significantly impacted air quality in many United States states. Human actions cause most ignitions, while land managers use controlled burns to mitigate risks. Property defenses and defensible spaces are crucial for protecting homes from wind-borne embers.

Wildfires are burning in several provinces, forcing thousands of people from their homes. Smoke from those fires is choking out millions in major cities across North America.

Over 120 million people were at risk of dangerous air quality