Using the vortex theory the author has identified a source of enormous energy at the core centre of the Earth. He calls it the Gravity Geyser. Geological evidence reveals every few thousand years devastating earth changes occur that are linked to the reversal of the Poles. The understanding of why this might happen has until now been unclear. His work in the field of vortex physics provides a theoretical framework to support the notion that colossal amounts of heat are periodically released from a gravitation mechanism acting like a geyser at the core of the Earth. The rise of this heat inexorably towards the Earth's surface is a likely cause of global warming. The fact we are in a period of global warming now is a clear indication to me that the next pole shift is imminent. The implication is that any day now we and 21st Century civilisation could be quite literally 'wiped off the face of the Earth'.