The dry spring meant less phosphorous fertilizer running off into tributaries of Lake Erie. It's too early to tell if efforts to reduce phosphorous are paying off.
PennEnvironment and Clean Air Council want a federal judge to find that U.S. Steel violated the Clean Air Act thousands of times after the 2018 Christmas Eve fire at the Clairton Coke Works.
The Republican-controlled legislature did not renew a statewide preemption on single-use plastics, opening the door for cities and municipalities to institute their own bans.
When U.S. Steel announced it was canceling $1 billion in upgrades in the Mon Valley, it also pledged to become carbon neutral by 2050. So what does this mean for the region?
A 2018 Christmas Eve fire at the Clairton Coke Works knocked out pollution controls for three months, resulting in large releases of sulfur dioxide, a lung irritant.