Have you heard about the BP oil spill lately? Probably not, why? Because the bacteria in the gulf ate most of it. Yes it did cause localized problems. I come from a place where nature can kill you if you don't pay attention to it, it has far bigger forces than we realize. There are people that complain about where we put roads and how much environmental 'damage' they cause. The roads they shut down 20 years ago in the forests are unrecognizable in most places, the ones in the desert take a little longer. If we all disappeared from the earth tomorrow, in 100 years you wouldn't find much, in 1000 you'd find really little, even metal goes away eventually. I wish people would be reasonable about the planet we live on, if we weren't here the earth's processes and live would continue on like they have since day 1.