Science

The Allegheny County Health Department gave the company five days to respond with a plan to reduce emissions at Clairton Coke Works and its Edgar Thompson and Irvin plants.

Over the past decade, William Happer has waged a fierce campaign aimed at debunking fears of global warming caused by emissions of carbon dioxide and other greenhouse gases.

The bequest was Carol Orzel’s dying wish, so that others could learn more about her rare disease, fibrodysplasia ossificans progressiva.

Pennsylvania's Department of Environmental Protection has pinpointed 20 locations with high PFAS levels in water sources. They include areas of Bucks and Montgomery counties.

The only member of Pennsylvania’s delegation to support the resolution to date is Democratic Rep. Brendan Boyle from Northeast Philly.

The draft, obtained by StateImpact Pennsylvania, is being actively worked on by state lawmakers, and the specifics could change.

Critics say promises won’t make the cross-state pipeline project any safer.

Wanna get your hands dirty in astronomy? Backyard Worlds: Planet 9 is a newly revised version of a Zooniverse Citizen Scientist data-mini ...

Pittsburgh researchers are working on potentially cheaper ways to capture carbon dioxide from coal-fired power plants.

Friday's letter to Microsoft leaders is the latest instance of U.S. technology workers standing up to their companies over the companies' lines of business or policies.

Programs in municipalities around Philly are adjusting as China’s stricter standards for recyclable materials appear permanent.

Three Mile Island might close down this year. But operators at the Peach Bottom Atomic Power Station hope to stay in business until at least 2053.

Historic preservationists hope the 50th anniversary of the Apollo 11 moon landing will persuade the United Nations to protect Armstrong's footprints in the lunar dust.

Some humans here on Earth think so, now that the Opportunity rover’s mission has ended.

Of the 8 million vehicles registered in Pennsylvania, just 15,000 of them are electric.