Two Evangelicals, Brian McLaren and Cameron Trimble, have written an open letter to the US congress about the need to care for creation:

We say care for the earth because we are listening to our brothers and sisters around the world, especially those in Africa and Asia and Oceania, for whom the effects of global warming are and will be the most devastating. Not listening to them now will require the U.S. to respond to increases in famines and floods, costly both in dollars and in human life.

You can read the full letter here.