Environment

New research from Carnegie Mellon University in Pittsburgh shows thousands of lives could be saved each year if air quality standards were tightened.

About half of the original 30,000 gallons of highly toxic hydrofluoric acid remains. “A good week,” Philadelphia Fire Commissioner Adam Thiel says.

Philadelphia’s future LNG plant gets grant for solar panels. Environmentalists say that doesn’t make the fossil fuel project right.

The result? The gulls, on average, took 21 seconds longer to approach the food when being stared at, according to the study.

Croda Inc. released more 2,600 pounds of highly flammable ethylene oxide in November. Officials want to resume production in two months but state says more must be done.

The regulator demanded information on how the local population would be affected by any pipeline failure.

The first 80 workers have been let go at the shuttered Philadelphia Energy Solutions complex, more than a week earlier than expected.

Signed into law Wednesday are programs designed to offer incentives to home and business owners and help the city advance its climate goals.

It wasn’t until a few years ago that researchers defined what really counts, to animals, as play.

Researchers are now calling for the world to cut back on its meat consumption. But some advocates say there is a way to eat meat that's better for the planet.

A new study published today in JAMA finds that long-term exposure to slightly elevated levels of air pollution is linked to accelerated development of lung damage.

For the fourth consecutive week, a Barnegat Bay beach in northern Long Beach Island is under a swimming advisory due to excessive fecal bacteria, officials said.

Dredging and beachfill operations are set to begin in a portion of Cape May this fall, officials announced. 

The longest-running public service campaign is tied to a reduction in wildfires, but in some ways, Smokey's message may have worked too well. Here's how he's changed.

Chester County DA Thomas Hogan says constables overstepped their bounds when patrolling a suburban development.