Science

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.

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.

The House and the Senate have both proposed plans for Space Force in their versions of the annual defense bill.

Can you lift the mood of a public space with a fragrance?

In place of brick, builders are embracing new materials and wood-frame construction. The reasons why come down to changing economic, cultural and environmental dynamics.

The way we produce food and manage land must change radically if humans hope to avoid catastrophic global temperature rise, according to a new report.

For now, independent pipeline experts say the blast appears to have been caused by the relighting of a pilot light.

Authorities will begin neutralizing hydrofluoric acid at Philadelphia Energy Solutions any day now, but doing so comes with significant risks.

Resident reports loud explosion; company says no liquids leaked from line

In New Jersey, more than a million tons of plastic end up in landfills each year. But is it possible to live without it?

The 2019 Atlantic hurricane season is still on track to produce "near-average" activity, according to a prediction by atmospheric scientists.

The chemical is one of the most dangerous industrial substances in use. It was an integral part of the unit that exploded at PES back in June.