"Canadian Wildfires Highlight Urgent Need for Climate Action and Planning"

The majority of Canadian wildfires burning this spring and impacting US air quality were caused by humans, according to experts. Climate change likely played a role in creating the conditions for record-breaking heat in May that contributed to the dryness of plants and organic matter, and the current windiness allows the fires to spread rapidly. The low-pressure system adrift over Maine and Nova Scotia that has helped funnel the ashen air into the US will probably be "hanging around at least for the next few days," and some of the most dense smoke may shift west toward Pittsburgh, Cleveland, and Detroit.