Saving God's Green Earth, by Tri Robinson.
Robinson is a pastor of a Vineyard church in Idaho, and is at the forefront of the “creation care” movement in evangelical circles. This book has some how-to information on being a good steward to the earth, but mostly focuses on Robinson’s own journey towards becoming seeing care for nature as not only the province of the extreme left.
There is a generational shift on this issue happening in the evangelical world, and younger leadership emerges in the movement. There is interesting stuff behind this shift in theology, from sociology to life experiences to politics, some of which Robinson touches on.