Pennsylvania supports over 2,000 species of native plants, many that grow along the 185-mile stretch of the Kittatinny Ridge, and all are threatened by invasive species. These introduced plants quickly take over, …Read More

The Appalachian Trail (A.T.) corridor may harbor more rare, threatened and endangered species than any other National Park Service unit. By protecting rare species, and biodiversity in general, the ecosystems in which …Read More