Why wildfire smoke is especially bad for your health

Coloradans woke up to hazy skies Monday morning, as smoke from the Morgan Creek wildfire near Steamboat Springs prompted air quality health advisories from Routt to Summit counties, and smoke from fires in California cast ...

EPA revokes Trump-era policy that loosened clean-air rules

The Environmental Protection Agency is revoking a Trump-era rule that overhauled how the agency evaluates air pollutants, a move the Biden administration says will make it easier to enact limits on dangerous and climate-changing ...

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