Pennsylvania diesel averages $6.50 a gallon as war disrupts the Strait of Hormuz. A historian traces today’s oil market back ...

The first oil deals were struck on the streets of Oil City, about 90 miles north of Pittsburgh. To create a more formal system, the oil traders developed a railroad car designed to be a rolling oil ...

Duquesne Light says it’s hardened its Pittsburgh-area grid and will prune 40,000 trees this year. Readers told us about ...

A second Allegheny County child has measles. The student attends a private religious school where the reported vaccination ...

Pittsburgh's Public Source reviewed ALCOSAN's $1.03 billion Ohio River Tunnel contract and found little of the work headed to ...

Whether it’s visiting a friend or attending a Penguins game, I need to weigh the hidden costs — often with little support or accommodation.

Emails obtained by Pittsburgh's Public Source show a developer's plan for a 3.7 million-square-foot data center campus and ...

The Allegheny County Health Department now says both confirmed measles cases attended the same North Hills Christian school, ...

An acre of Highland Park is becoming a public orchard, with apples, pawpaws a hickory-pecan hybrid called a hican and more that anyone will be able to pick.

Pittsburgh’s Public Source asked Mayor O’Connor and Allegheny County Executive Innamorato about ALCOSAN’s $1 billion tunnel contract, which shows less than 1% of work going to minority-owned firms.

Allegheny County is mailing ballots for this year's midterm election. Here's how to return yours, including drop-off sites, by the 8 p.m. deadline on Nov. 3.

In Pittsburgh’s Polish Hill, residents shared with Public Source a range of positions on a plan to turn a vacant commercial building into a year-round, overnight shelter for people experiencing ...