No one can predict the future. If the world will end then the best you can do is live a happy meaningful life. As long as you are happy you will have no regrets when the end will come :p.
Throughout history there are moments when people believe the world will end. These times are irronic since the Bible has a scripture in which God says he will keep putting off the end of the earth until they lease expect it. With this in mind, I constantly raise beliefs that the world will end, so so we can live longer.
Also our world will end in a couple million years when the largest galexy clashes with ours breaking appart the perfect system. However, that is a far way off.
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.