This is a guest post by Charles J. Reid Jr., professor of law at the University of St. Thomas.
It is a line repeated with tiresome regularity in right-wing circles: Pope Francis has no business proposing solutions to the crisis of global climate change. He is not a scientist, they say. He should stick to morals and to matters of faith and doctrine.
Pope Francis' defenders point out that climate change is a moral question. If the destruction of the planet's ecological health is not a moral concern, then what is? But while climate change is certainly a moral issue, it is something much larger and more significant than that. It is a threat to the common good of the world.