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The smoke floating over the border shared between America and Canada is now impacting air quality in states as far south as ...
The red alert, issued by the Minnesota Pollution Control Agency, means that the air quality is unhealthy for everyone. It ...
The poor air quality is, in large part, due to particulate matter, known as PM2.5, released from smoke, fire and other sources of pollution such as power plants, cars and trucks.
Canada is having its second worst wildfire season yet. Two scientists explain what a red air alert means and how anyone living in impacted areas can protect themselves.