Last Dec. 19 was a gratifying day for John Dernbach. In 162 pages the state's highest court had resurrected a provision in Pennsylvania's Constitution that had long ago faded into obscurity. The forgotten measure is an environmental rights amendment nestled in Article 1, among core protections of civil rights and due process. The amendment gives people a right to clean air, pure water and conservation of natural resources. It hands environmentalists an opportunity to transform the natural gas debate in Pennsylvania and beyond.