Smoke from Canadian wildfires is blanketing much of the U.S., triggering widespread air quality alerts as firefighters battle nearly 900 active blazes. Million

Smoke from Canadian wildfires is blanketing much of the U.S., triggering widespread air quality alerts as firefighters battle nearly 900 active blazes. Millions of Americans are being warned about unhealthy air as smoke stretches from Minnesota to the New Hampshire, with major cities including New …