Air quality regulators in Southern California heard impassioned public comments Friday before an anticipated vote on proposed rules that would curb harmful emissions from gas-powered furnaces and ...

Federal authorities arrested a man they say collaborated with the bomber of a fertility clinic in May, alleging that he ...

Smoke from Canadian wildfires carried another day of poor air quality south of the border to the Midwest, where conditions in ...

Smoke from more than 100 wildfires blazing in Canada is expected to spread and impact air quality index in Minnesota.