This week, millions of Americans are anxiously scanning air quality maps focusing on two colors: red and purple. Red indicates "unhealthy" air quality, and purple? "Very unhealthy." When did purple ...
Detroit, we have a code maroon! With the smoke from hundreds of Canadian wildfires wafting around the globe, millions of Americans are learning that, when it comes to air quality, there’s something ...
Smoke from Canadian wildfires is again blanketing parts of the U.S. in a thick haze. Midwestern cities like Chicago, Minneapolis, Detroit and Milwaukee posted some of the worst air quality in the ...
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