Science

Delaware’s top environmental regulator apologized Thursday for what he called poor public messaging about emissions from the Delaware City Refinery.

We explore what creativity is, how it works, and how we can use it in unexpected ways.

The EPA last month proposed to give water providers more time to remove toxic PFAS chemicals from drinking water.

Upper Darby School District is planning six Solar for Schools projects. Without federal tax credits, the district says they wouldn’t happen.

The House budget bill Rep. Brian Fitzpatrick voted for would be a “disaster” for business, solar installers say.

North American river otters once lived in every major river system in Pennsylvania. But because of development, otters largely disappeared from the state by the early 1900s.

Repairs to a broken air pollution control device could take two more weeks, a refinery official said.

The EPA regulated "forever chemicals" last year, but recently proposed to rescind certain restrictions.

The air pollutant sulfur dioxide can make breathing harder for people with asthma. The refinery has been releasing it for several days.

On this rebroadcast of The Pulse: Before dinosaurs, before trees — even before Saturn had its rings – there were sharks. The fierce p ...

About 4,500 people are working inside Amazon’s fulfillment center in Wilmington at any given time. After renovations, some of their newest coworkers will be robots.

City falcons have successfully added buildings and bridges to the their natural habitats in cities such as Elizabeth, New Jersey.

Researchers say losing USAID funding means less research that benefits the U.S. government, fewer opportunities for students, and a loss of trust in the U.S. overseas.

Why researchers say the Asian longhorned tick is spreading so rapidly — and why it could pose a serious threat to human and animal health.

For 30 years, Kathy Sanders has sought answers about the terrorist attack that killed her grandsons. She hopes a new piece of evidence will bring her closer to the truth.