On Preaching the God of Creation tells a little about how I came to the decision to place this truth on center stage at least once every year that I preached.
The Best Preaching on Earth is a short review of a book by that title. It's a fine collection of sermons and sermon ideas.
If you decide to do some teaching (or, more teaching) on Christians and the Environment, you may want to check out a book by Roger Gottlieb called A Greener Faith: Religious Environmentalism and Our Planet's Future (Oxford, 2006). It's billed as "the first comprehensive account of religious environmentalism."
Preachers, find out how some biblical conservatives are plugged into environmental issues; see the website for the Evangelical Environmental Network. The links on the left side of the home page include "Fact Sheets" that you can use in your teaching in order to reach even those Rush Limbaugh fans in your congregation.
"The earth is the LORD's, and everything in it, the world, and all who live in it" --Psalm 24:1, NIV