Internal U.S. National Park Service documents reportedly advise people to “avoid prolonged exposure” to the expected ...

Trump's plans for a massive fireworks display on July 4 triggered an emergency air pollution warning, according to a new ...

Internal National Park Service documents seen by The Washington Post suggest visitors should “avoid prolonged exposure” in ...

Scientists have uncovered new evidence that fireworks can pollute both the air and water in ways that extend beyond the ...

Residents of Washington, DC, on Sunday briefly experienced the worst air quality of any major city in the world, according to ...

Hazardous levels of air pollution are expected across central and southern Los Angeles County, northern Orange County, ...

The American Lung Association recommends taking steps to protect your lungs from fireworks smoke and the harmful pollution it ...

President Donald Trump’s America 250 celebration may have left some Washington, D.C. residents trapped indoors as the ...

With bigger fireworks celebrations across the US, cities are expected to experience poor air quality under historic heat.

WHAT’S HAPPENING TODAY: Good afternoon and happy Thursday, readers! Daily on Energy will be suspended tomorrow for the ...

Washington is preparing to host the world's largest fireworks display on the US' 250th birthday, but the event could have ...