That this isn't common knowledge to most is surprising to me. World population is growing exponentially, we are consuming resources faster than they can be replaced, and people not fit to lead are leading many countries. I don't know if the year of this happening is right, but we will eventually crash and burn. This could be due to war, famine, mass civil disruption, running out of resources, over-population, or any number of other ways I have not thought of. Going green may put this on hold for a while, or it may not, but there must eventually be a culling of the human race.