“How we treat the creation reveals how we feel about the creator.” – Rob Bell

I have not yet had the time to research it in the Bible specifically, but I personally believe that it is a Christian principle to take care of the planet that we live on. I am happy to see that my beliefs are being echoed amongst many mainstream Christian leaders.

(Please note: I do not necessarily agree with all statements made in the above link. But I do feel that it is a large step in the right direction and worthy of commendation.)