Environment

The illicit emissions are believed to be coming from somewhere in eastern Asia, but otherwise, nothing is known about the offender. It's a scientific whodunit.

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“It was an empty lot; concrete,” said Irene McKallop. “There wasn’t anything there. It was nothing, it was all cement.”

The service says the tsunami was registered by air pressure sensors and tidal gauge readings in and near the coastal waters.

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 ...