Well the keeling curve at Mauna loa goes back to 1955 at 310ppm there were earlier measurements in different places but not so reliable. So I guess it is an estimate, and probably a fair one. The rest of the article is pure rubbish 1.4F is well within expected natural variation and we had had no rise for the last 18yrs.
Wild fires are no more common now than a hundred yrs ago. At the rate of sea level rise we have now and have had since the 1990's shows that seal level will probably rise by about 7inches by 2100, 3ft is pure fiction.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.