How long a kidney stone lasts would be dependent on the person and whether they pass it or not. A kidney stone can remain in the kidney and not cause any problems for a long time. If a kidney stone has to be taken out it usually is a matter of a few days.
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.