I agree fossil fuels are important but it is because the big energy industries has supperesed forward thinking ideas all for the benefit of profit and enslavement. If they found a less poluting way do you thinnk they would do it by now? They go to the moon and mars first before they would find a solution for non-polluting technology.Our prioritys are in the wrong place because of profit/enslavement. I am afraid that always will be that is why we have greed. Though I was not around during the caveman days my guess is that when a group of cavemen came upon another group, be it same type as them and worse scenario a different color, they did not embrace each other and proceed to find out where they came from and share knowledge but the thought would be of, leave this area because your group is depleting our hunting grounds. Greed. So if you believe that it only carries on throught history of this thought. We call them wars now and the innocent dies for fighting for the greedy. It is the thinking of the world that must be changed and that won't happen in our life time.