The Lackawanna River in northeastern Pennsylvania was once polluted from mining and sewage. We profile the longtime leader of a conservation group who spearheaded its cleanup. Chemical recycling plants that turn plastic into fuels and other materials have been proposed in Pennsylvania, West Virginia and Ohio. Why some residents worry about pollution and safety. Plus, a Penn State professor gives us the scoop on why the upcoming solar eclipse is such a big deal. A Pennsylvania college student is developing a new technology could save one million horseshoe crabs each year.

We have news about a federal grant to build the largest solar farm in Pennsylvania, why the West Virginia governor vetoed a bill expanding renewable energy, and why activists in Virginia think a fine for a major pipeline project is too small.