http://climate.nasa.gov/evidence/
Nick I think you will accept this organization as serious!
ehem..
The only problem is Cem that, can anyone explain why C02 levels were heading towards, and at one time, virtually on, 300 parts per million in 320, 220, and 105,000 years since 1950? Also the graph appears to have an error; "0" in my reading of the chart should be 25,000 years ago, and not 1950. How does 1950 truly match the high reading in the graph?
In addition I would refer to my previous post about climatic changes throughout history with extremes noted. Why should the 'apparent' high C02 level not be a natural occurrence as in previous, pre-industrial revolution, periods noted by the chart? What caused the high C02 then?
You can also refer to data and statistics to paint the picture you want, to explain your own point of view. NASA is a government backed authority with it's own political pressures, lacking independence. There are others out there who do not believe those figures, and I must confess I am one of them.
So sorry Cem, but as I stated before, World climatic change has, and will, continue to happen without any action by man
