Here is an interesting chronology of the Northern Hemisphere's climate.

http://academic.emporia.edu/aberjame/ice/lec19/holocene.htm

One question I have for the believers in the AGW dogma, particularly the religious leaders, is what is the appropriate temperature for Earth? It seems to have varied a lot in the past rather than having been stable for centuries, as the IPCC has tried to say it has. Also, warmer seems to be better than colder based on history.