In urban neighborhoods, trees could prove to be more than just a nicety, but a necessity, when it comes to people’s health. In Pittsburgh's Garfield neighborhood, a group of volunteers is paying special attention to some vacant properties, mostly owned by the city.
Pennsylvania’s environmental justice program was created before the state’s fracking boom began. So none of the state’s more than 10,000 shale gas wells were ever subject to it. Some environmentalists think it’s time that changes.