
WASHINGTON: Smoke from Canadian wildfires shrouded US cities in a noxious haze again Thursday, delaying flights and disrupting outdoor events in what President Joe Biden called a "stark reminder" of climate change.
Thick skies and an acrid campfire smell hung over the capital Washington, with parts of the mid-Atlantic region reaching "Code Maroon," the highest category of the Air Quality Index (AQI), signalling hazardous conditions.