Group Against Smog & Pollution

Yinz smell that?! That tell-tale stench of rotten eggs? You’re not smelling things: Concentrations of hydrogen sulfide (or H2S for short) are sky-high in and around the Mon Valley today. And you’re not alone in your suffering - social media and Carnegie Mellon University’s Smell Pittsburgh app lit up with complaints starting overnight Monday and continuing into the afternoon Tuesday: For the uninitiated: H2S is a toxic gas that occurs both naturally (from sources such as sw

GASP crunched the numbers and can tell you definitively that in the Mon Valley (and downwind of it) the stench has been UNRELENTING this...

Another weekend, another pair of air quality exceedances for the Mon Valley – concentrations of hydrogen sulfide at Allegheny County...