Environment

Emails show that the federal Agency for Toxic Substances and Disease Control is planning to publish recommendations that EPA officials warned would fuel public alarm.

Pittsburgh attorney Laura Ellsworth, Pittsburgh businessman Paul Mango, and state Sen. Scott Wagner (R-York County) are running for the Republican nomination.

One of the oldest living ospreys ever recorded in New Jersey returned to his bayside home to nest and roost.

Drexel researchers suggest that after becoming gaseous again, smoke residue compounds can attach themselves to tiny air particles that come inside through an HVAC system.

Sunoco rejected a state senator’s demand that it halt construction of the Mariner East 2 pipeline in Chester County.

Pennsylvania will use the $118 million it received in a settlement with Volkswagen to fund grants and rebates for cleaner vehicles and engines.

For more than 60 years, the Natural Lands organization has worked to preserve open space and connect people to the natural world.

Wildfire danger usually remains high until around Memorial Day.

Farm to faucet Welcome to the Riverwalk along the Christina River in Wilmington. It’s one of many rivers, cr ...

Spend an afternoon on the Christina River with the Newport Rowing Club, and you'll see how these students see the water in a different light.

The Department of Environmental Protection fined Sunoco/Energy Transfer Partners an additional $355,622.

As Arctic ice caps warmed, scientists — believers and skeptics — came together to seek answers.

Scientists are learning from farmers and traditional healers — and documenting what powers their success.