On May 18, 1971, Pennsylvania’s voters ratified an Environmental Rights Amendment to its state constitution. Fifty years later, with climate change now the overriding threat to the health of the planet, the architect of that amendment makes the case for an environmental amendment to the U.S. Constitution. In this episode, we talk to Franklin L. Kury, who served in the Pennsylvania House of Representatives from 1966 to 1972 and the Pennsylvania Senate from 1972 to 1980, about his new book, The Constitutional Question to Save the Planet: The Peoples' Right to a Healthy Environment.