Yeah so what ??...Humans have been fighting for survival for thousands of years. Lets face it, life is tough. Ancient humans were fighting for their survival because of serious climatic changes which took place throughout the world thousands of years ago, long before we started drilling for oil and pumping hydrocarbons into the atmosphere. This earth has gone through a lot of climate changes which is a natural process and has absolutely nothing to do with us humans.
Science needs to stop messing around with nature because nature is self-correcting. Just imagine if all those dinosaurs never died out, we humans would never be here.