Residents keep an eye on a polluting coke plant that a judge has allowed to stay open. New rules for pig slaughterhouses may put pork and worker safety at risk. Families of cancer patients want the state to look at fracking. Actors get into character as creatures of the night. Plus, bad news for pumpkin lovers.

Pittsburgh restaurants are recycling oyster shells to help restore the Chesapeake Bay. We report from Scotland about how ethane from Pa.'s fracking boom is fueling the world's thirst for plastic.  Researchers are trying to figure out what's killing apple trees. Pennsylvania will join a regional cap-and-trade program for carbon emissions. Using artificial intelligence to predict landslides.