A Moment of Science

Katie Blackley / 90.5 WESA

Last month, the Environmental Protection Agency proposed regulating two PFAS chemicals in drinking water: PFOS and PFOA. Also known as "forever chemicals" due to how difficult it is to clean them up, these compounds are associated with health problems.

Kathleen J. Davis / 90.5 WESA

Machine learning is an integral part of Pittsburgh's tech economy, thanks to Carnegie Mellon University's position as one of the nation's foremost research centers on the topic. That's enticed tech giants such as Google and Uber to set up shop in the Steel City. 

Sarah Boden / 90.5 WESA

Summer is winding down, which means pumpkin spice lattes are popping up in coffee shops and Halloween decorations are appearing on store shelves.

Bebeto Matthews / AP

Duquesne University is planning to admit its first class of osteopathic medical students in the fall of 2023. The field is growing; according to the American Osteopathic Association, about one in four medical students attends an osteopathic school instead of a traditional, allopathic medical school.

Sarah Kovash / 90.5 WESA

Central Lawrenceville buzzed with the sounds of chainsaws Monday, after strong winds and rain from a weekend downburst uprooted several trees in the Allegheny Cemetery. Crews spent Monday afternoon cutting off branches from a particularly large tree hovering over a grassy patch near the cemetery’s gates off Butler Street. 


Gene J. Puskar / AP

Allegheny County residents are no longer required to fill their cars with a special blend of gasoline in the summer, the Environmental Protection Agency announced on Friday.

The rule was first introduced in 1995 in order to reduce the formation of ground-level ozone, a pollutant that has been linked to negative health outcomes such as asthma and chronic obstructive pulmonary disorder.

Toby Talbot / AP

Last week, a rabid raccoon was found in Frick Park, making it the sixth animal to test positive for the disease in Allegheny County this year.

Keith Srakocic / AP


Monday is the deadline to file taxes, and that means a tax return is in the future for some Pittsburghers. But people have mixed opinions on whether they actually want that big windfall.

Gene J. Puskar / AP

Two weeks after a Christmas Eve fire at U.S. Steel's Clairton Coke Works, the Allegheny County Health Department warned residents to limit time outside because of potentially dangerous levels of sulfur dioxide in the air. Three months later, Mon Valley residents say it’s still affecting their quality of life.