just a brief aside...read any major paleoclimatological study done, and they almost exclusively say that we are in a warming trend now in relation to past climate. Theres a nice little cycle that repeats, containing roughly 90,000 years of cooling followed by 10,000 years of warming. A lot of studies seem to think we are nearing the end of the warming phase as well.
**i can get the sources for these, because i know 1 moron, check that, poster, who will question the sources and claim they are wrong. The girlfriend has been doing a paleoclimatology paper, and theres over 20 books/papers sitting on our table at home. Sorry tho, no wikipedia link.