Global Warming - the last 120 years
Global warming : the last 3,000 years
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Global warming last 120 years

This is a photograph of an illustration in the Weekend Australian newspaper (August 22, 2007, Inquirer section, page 22) from an article by Martin Durkin.
Arctic temperature variations over a 120 year period (as measured by scientists from NASA and the US National and Atmospheric Administration) are superimposed :

  • on the left by Solar irradiance
  • and on the right by the increase in CO2 levels
I am sure you can form your own conclusion from that.