The combination of heat and fireworks is creating hazardous air pollution in Washington, D.C., that could lead to “very ...

The 4th of July was an eventful celebration across Central New York with numerous firework shows Saturday night!

SMOG checks or emission tests exist due to the U.S. Environmental Protection Agency's (EPA) regulation on passenger vehicles. Each state sets limits of nitrogen oxides (NOx) from emitting past certain ...

Centuries before the term was even coined, scientists have known what causes smog. But deciding how to reduce air pollution — and then actually doing it — took a lot longer. Smoke and fog: Put them ...

The Los Angeles region has some of the most polluted air in the United States, failing to meet standards set by the Environmental Protection Agency for the last decade. Now, Caltech researchers have ...

Federal prosecutors in Sacramento on Thursday unsealed an indictment charging 12 people from around the state with violating the Clean Air Act in what they portrayed as a long-running, sophisticated ...

Eighty years ago, the enchantment ended. Los Angeles, that magical realm of shimmering natural beauty, was befouled by smog — maybe forever. The mayor, Fletcher Bowron, told Angelenos in 1944 to lower ...