Editor
Millions of people in North America are under air quality advisories as wildfires burning across Canada have prompted evacuations, disrupted air travel and caused apocalyptic, smoke-filled skies even thousands of kilometres from the blazes.
The National Weather Service in the United States extended air quality alerts on Thursday for the East Coast from New England to South Carolina, as well as parts of the Midwest including Ohio, Indiana and Michigan.
Health officials in more than a dozen US…
