July 17, 2023, 6:46 a.m. ET. Air polluted by the Canadian wildfires is back in the United States this week. There are nearly 900 wildfires burning across Canada, but the smoke this week will be …
https://www.nytimes.com/2023/07/17/us/wildfire-smoke-canada-ny-air-quality.html
https://www.nytimes.com/2023/07/17/us/wildfire-smoke-canada-ny-air-quality.html

