temperatures of the last 12'000 years: http://en.wikipedia.org/wiki/File:Holocene_Temperature_Variations.png http://en.wikipedia.org/wiki/File:Holocene_Temperat

temperatures of the last 12'000 years: http://en.wikipedia.org/wiki/File:Holocene_Temperature_Variations.png http://en.wikipedia.org/wiki/File:Holocene_Temperature_Varia...