Anyone can make a terrifying fantasy GIF. The image below is historically what actually happened in the last ice age. Given the length and stability of that time frame, I suspect it won't be much different next time.
You can read more at Ice Age Now as provided by Robert Felix on his website. Good current events coverage and good historical perspective. The area north of the black line was glacier.
39 posted on 05/15/2014 11:33:26 AM PDT by Myrddin