Who knows what exactly the worker inside a pickup truck was thinking? He had just pulled up to find a creepy vapor cloud spewing toward him at the South Philadelphia gas refinery early June 21. But it ...

A tractor-trailer overturned on Interstate 395 in Plainfield on Thursday morning and vented a vapor cloud from the tanker it was hauling, leading to both sides of the highway being shut down. The ...

Tulsa Fire evacuated a local business early Friday as a precaution after a vapor cloud of hydrochloric acid was spotted next to a nearby railroad tank car. Just after midnight, employees of Tulsa ...

DOVER, Ohio – A large hydrochloric acid spill early Saturday at an east-central Ohio plant that makes chemical additives spawned a massive vapor cloud that took hours to dissipate, officials said. No ...

Juul Labs has soared to the top of the U.S. e-cigarette market in just three years with its high-nicotine products that give off just a wisp of vapor. Now, facing public backlash and overseas ...

Clouds hover over San Francisco. Low clouds, like those often covering California's coast, are among the most important clouds for climate change and the planet's energy balance. (Getty Images) Study ...