It seems to me that the natural world is the greatest source of excitement; the greatest source of visual beauty; the greatest source of intellectual interest. It is the greatest source of so much in life that makes life worth living.
The truth is: the natural world is changing. And we are totally dependent on that world. It provides our food, water and air. It is the most precious thing we have and we need to defend it.
Young people – they care. They know that this is the world that they're going to grow up in, that they're going to spend the rest of their lives in. But, I think it's more idealistic than that. They actually believe that humanity, human species, has no right to destroy and despoil regardless.