Re: it's natural...
OK, humans are natural, so lets not get hooked up about natural versus anthropogenic. But nature will not sort us out on this one, the equilibrium state of earth contains no oxygen, hence very little energy for our convenience. Fortunately, the plants helped us out by pushing the earth from it's equilibrium state and creating a cozy environment for us animals. We currently dig up all fossil fuel we can possibly find, burning millenia worth of coal, oil and gas in days. How is nature gonna sort this out for us?
