Watershed

The Philadelphia Energy Solutions refinery has started neutralizing and eliminating a highly toxic chemical still present at the site. It will take weeks.

Philadelphia needs more trees. Here is a guide to understanding why there aren’t more trees and what can be done about it.

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

PES and our elected officials must do more to make sure workers have the opportunity to develop new skills and find meaningful work in our country’s evolving energy sector.

Philadelphia residents concerned about health and environmental impacts dominated the first public meeting of the city’s refinery advisory group.

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.

Philadelphia wants input from all stakeholders, including those with environmental expertise, neighbors who live near the refinery, and workers.

Advocates claim links between illness and chemical contamination as companies feud over who would pay to clean soil and water.

The new Secretary of Defense says he wants to review how chemicals in firefighting foam contaminated groundwater near military bases nationwide.

Scientists and regulators appeared before state lawmakers to discuss environmental impacts of June’s blaze at Philadelphia Energy Solutions.

Philadelphia Energy Solutions says the goal after reorganization is to rebuild and continue to operate its South Philadelphia refinery complex.

Damage pushes the refinery to file for Chapter 11 again. Philadelphia Energy Solutions expects to restructure with a $100 million financial agreement.

Philadelphia Energy Solutions’ future is unclear and the debate over what should happen to it mirror a conversation that’s taking place across the U.S.

It's used to make cleaner-burning gasoline in about four dozen refineries in the U.S., including two in Philly region.

Heavy rain shifted the lid of a tank at PES refinery causing fumes to escape. City officials say there is no sign abnormal pollutants were released