The way it works as I understand with global warming is as follows. 1..obviously temperatures increase for whatever reasons; natural plus human 2...polar ice caps melt wich eventually raises sea level and dump a lot of cooler freshwater into the oceans which in turn rearranges currents. Also causes more sever changes in weather patterns causing more and harder hurricanes 3...warmer currents that once reached places like England, Europe and the North Eastern US for example, exist no more and are replaced with cooler currents 4...the new cooler currents rearrange weather patterns more severely the farther you are from the equater. Crops fail, people starve and that kind of stuff. 5...cooling effect in turn creates the beginning of a new ice age as global temperatures begin to decrease because of the fresh and cold water that has now altered the current warmer currents. Plus the poles potentially shift causing even more fun stuff! Antartica was once covered with dense warm weather forests just so you know. Kind of a basic way to say ultimately we are all fu^&ed if it happens as fast as the last ice age did. It could occur in less than 50 years, so my grandkids/daughters kids are fu%^ed and I'll still be able to see everyone suffer as I should still be here too. The Pentagon has been preparing for such an event despite the US policy makers failure to admit this is a real issue. So all of the old rich greedy bastards will be OK. Just so you can rest at ease knowing all of the same pricks should survive.