Science

NASA is holding its first public meeting on UFOs a year after launching a study into unexplained sightings.

Experts warn that Artificial intelligence models could soon be smarter and more powerful than us and we need to impose limits to ensure they don't take control over humans.

The annual red knot arrival is underway as federal regulators have unveiled a plan to protect nearly 700,000 acres in New Jersey, Delaware, and 11 other states.

Anglers say Bushkill Creek has a history of receding, leaving hundreds of fish to their death.

Humans have long been fascinated by the idea of communicating with other species — not just teaching animals to mimic human words, but ...

Environmental scientists are evaluating the potential costs of climate change in Philadelphia — and how to prepare.

Delaware officials pull off evacuation-type procedures every week during the tourism season.

The state House panel passed a bill Tuesday that would restore the Environmental Quality Board’s ability to raise bond prices on conventional well drillers.

Medical illustration is a small field — there are about 2,000 certified professionals in the world, including a small team in Philly at CHOP.

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.

The PA Tick Research Lab, one of only three labs nationwide engaged in tick testing and research, is analyzing data from 30,000 tick exposures in Pennsylvania from 2019-2021.

Experts say climate change is fueling and favoring the growth of invasive species—in many cases, at the expense of Pennsylvania’s cherished symbols.