There is currently no option to have curved lines on a Core Plot scatter plot. See this issue for details. Until this is added, you might be able to fake it by adding intermediate points to your plot that approximate the desired curve.
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.