Environment

A study by researchers at the University of Pennsylvania found composting and feeding food waste to animals would cut carbon emissions.

When temperatures spiked last month, so did air pollution. Here’s why.

PGW sought emails, texts and memos from climate groups that are participating in its ratemaking case. The PUC ruled that would violate the First Amendment.

The district’s agreement with DOJ to delay prosecution of criminal charges describes asbestos issues at 31 schools.

Landlords would be required to certify their properties are lead-free, or safe from the toxin.

Regulations demanding Delaware water providers test for PFAS would take effect a year before federal requirements.

Grants focus on creating legal dumpsites for residents and small haulers.

The funding includes more than $36.9 million for Pennsylvania and more than $9.8 million for Delaware.

Sniffer dogs at Lincoln Financial Field were outfitted with brightly colored booties amid soaring temperatures in the region.

The multimillion-dollar experiment that was years in the making comes as the federal government makes broad cuts to science elsewhere.

The Philadelphia Water Department restored water flow from the Schuylkill River to the Manayunk Canal.

In 2020, Josh Shapiro, then Pa.'s AG, released a landmark report with recommendations on regulating fracking. Advocates say he has done little to advance them.

Three takeaways from a panel moderated by WHYY’s Maiken Scott about flooding in Germantown and beyond.

Extreme heat could impact rail infrastructure. SEPTA says it slows down trains to prevent failures.

An air mass drawing on cool ocean waters will send temperatures plummeting by the end of the week in Philly, which hit a record high of 101 degrees Fahrenheit on Tuesday.