Whatever the cause of this Global Warming, the amazing fact that we are living in a time that is unique in the last 7000 years is a priviledge. It's a great oportunity for discovery. What else is under that ice? And what else is going to happen when the Earth rises up without the weight of the ice on it? The Great Lakes are being lifted up like glasses in a toast. Spilling thier contents in the process. Cheers!