The Clairton Coke Works is the biggest emitter of H2S in Pennsylvania and is "likely a substantial contributor" to the stinky toxic pollutant in the Mon Valley.
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.