Wildfire season has started two months early in Canada, and the devastating scale of the blazes is already unprecedented. Over 400 fires have caused roughly 10 million acres of burn damage so far, and have blanketed a wide swath of North America in smoke, creating orange skies and toxic levels of air pollution for communities all the way from Canada to the Southeastern United States. During the first week of June, New York had the worst air quality on Earth, and the air quality reached hazard...
