There seem to be one or two discussions on climate and environment going on at the moment. In the light of that I want to recommend a book. It's called "A Sand County Almanac and Sketches Here and There" by
Aldo_Leopold
It was written in the late 30s and early 40s and published a year after his death. It's worth getting hold of and reading for the quality of the writing almost as much as the subject matter.