If the polar ice caps are warming (they are) it is possible that there is a layer of very slippery water between the earth and the ice at the poles. If a small gravitational shift occured, it is possible that the entire sheet of ice could slip right off the land mass and into the sea. If that happened, the world would experience Deluge II, and society, if not humanity would be lost. According to Sumerian Lore, this is precisely what happened to Ziastruda (Read: Noah) when a God warned him of an impending flood. They did not cause the flood, they simply wanted man to be ignorant of it so they would be wiped clean from the earth. So, maybe not this time... -Darth_Logice