Unfortunatly, I know how petroleum is reproduced...fractional distillation for like, ten weeks running tends to melt the brain but at least it sticks
I'm more worried about the H2SO4 emmissions, or sulpur dioxide. That is one of the causes of acid rain. Acid rain kills trees, which in turn produce oxygen. Acid rain can collect as acid snow then melt into lakes, killing fish and water-plants.
I am very "green" minded. I was bought up that way. I hate the thought of our planet being hurt because nobody could be bothered to find out about any alternatives to fossil fuels, 'cause "they didn't know how much more there was."