I am uninterested in being either a good conservative or a good liberal. I want to further Catholic teaching. What actual Church teaching says is simple: human life is sacred from conception to natural death. The reason the Holy Father cares about climate change is the same reason he cares about the unborn, because he cares about human life, made in God’s image and likeness. Pope Francis says that the environmental crisis — especially climate change — “threatens the very future of the human family”. Like all sane Catholic teachers, he relates, not opposes, the unborn to all the other forms of human life threatened by, among other things, climate change.
But the motto of Hell is “divide and conquer”, so it pits the unborn against all those other forms of human life and teaches us to assume that to support the unborn is to oppose “liberal” concern about climate change. And Hell is so successful in that propaganda war it has even taught many Catholics to assume the Holy Father is some kind of heretic for taking the classic holistic approach the Tradition has always taken.