[NoGrayZone]

Have they yet to explain the occurrence of the Ice Age, the melting of the Ice Age, the mini Ice Age and the melting of it....all without human involvement?

[tobyhill]

Another Ice Age?

http://www.time.com/time/magazine/article/0,9171,944914,00.html

[Reily]

Ice Ages...plural !
There have been many times in the earth's history when ice sheets advanced. Once it seems enough to make the earth a snowball and there is some evidence for at least two other times. Note none if this is computer generated its from data, geologic & geochemical data! (Which isn't replicated if you feed this type of data into these simulations! That would make a real scientist think maybe this computer program has a few flaws and bad assumptions in it!) So did trilobites driving SUVs take us out of the snowball earth scenario?
Or was the Medieval Warming period caused by Vikings burning all those monasteries?