Sophia Schmidt

The city limits toxic air pollutants like lead and formaldehyde. A policy revision expands the list, but critics say it doesn't go far enough.

Trainees will learn to install heat pumps, which could cut climate pollution, lower energy bills, and keep families cool during increasingly hot summers, proponents say.

The proposal comes as the dangerous impacts of human-caused climate change become increasingly clear.

In a new report, environmental advocates crunched EPA data to call out Pennsylvania’s “dirty dozen.”

Before a chemical spill threatened to contaminate Philly’s water, 42% of residents drank bottled water. The long-term impact of the incident on trust is “yet to be felt.”

Residents complain of disruptive noise, “noxious fumes,” broken-down cars blocking an alleyway, and debris spilling into backyards.

A city-commissioned study estimates the ban prevented enough single-use plastic bags to fill City Hall every eight months.

From the future of PGW to tackling trash, here are the candidates’ plans.

Advocates worry the recent removal of tide gates at FDR Park hurt trees. Experts say it depends on the species and on how long they’re inundated.

Scientists predict that Adélie penguins could disappear from the western Antarctic Peninsula. Researchers at UD and Temple are tracking the changing conditions.

Philadelphia's first water commissioner transformed the city's drinking water system but "was no saint.”

The company redeveloping the former PES refinery site has promised a “green, sustainable” project, but residents want more specific commitments.