If you are interested in the ancient forest, and want to see it managed intelligently; if you think that the real bottom line involves the welfare of the entire planet and all who live on it; if you think that long-term planning requires us to look ahead decades and centuries, and not just to the next fiscal quarter; then check out some of the links below.
On the other hand, if you pride yourself on your "practicality" and are inclined to brush this kind of thing off as unimportant, please consider: the "big" issues of the day - foreign policy, prosperity and recession, taxes, jobs, etc. - while important in the immediate context will soon be forgotten and relaced by other, equally ephemeral concerns. What will remain is a threat to our ability to survive in an increasingly endangered biosphere. To the degree that we degrade the health of the planet we threaten our own survival. Global warming, spreading deserts, loss of arable land, increasingly polluted air and water, and burgeoning human population will not go away by themselves.