To answer your question Peter:

Did the Ice Age cover all of the earth with ice?
In: Snow and Ice, The Ice Age


Answer
No. The earth has experienced many glacial periods. The last one, about 10,000 years ago, is often referred to as the Ice Age. About 30% of the earth was covered by ice, most of it in the Northern Hemisphere. Many parts of Africa and South America, in contrast, were warm.
In North America, glaciers covered the ground as far south as Illinois and Missouri.

PS: Peter, just so you do not credit me with unwarrented intelligence there is a source of information available other than people on the message board called "google it"