other articles on the net show that he provided a few hundred year time frame. So as with any long term prediction its not something worth challenging. Once you

other articles on the net show that he provided a few hundred year time frame. So as with any long term prediction its not something worth challenging. Once you push beyond a generation its usually the same as throwing it at the wall and seeing what will stick. Though I do disagree that energy production on this planet will be limited, if anything it will become excessive once the clean energy revolution takes over. Then our big problem becomes dealing with all the heat pollution from using the energy