In celebration of Earth Day 2006, we talk with two environmentalists about their work on a former Superfund site in Mifflin County. They're creating a distinctive type forest habitat called vernal pools. Later in the program, it's one of the last wild places in the East. We'll talk with the author of "Pennsylvania Wilds: Images from the Allegheny National Forest". Guests: Kathy Patnode & Bruce Pluta & Lisa Gensheimer