As a religion, it has it's holy writ, it's ceremonies, and it's sacrifices. It also has a message for all you heathens out there:
The angry, birth-giving God, judging human sin against the planet is the theological reflection we Christian theologians need to provide for Earth Day 2012, and from now on. Our message to the whole society must be strong and direct so that people can grasp the extent to which climate catastrophe is already starting, and we must act.
God is judging our sin against the planet, and She is very, very angry about it.