I highly suggest that you take a look into the extensive category of subjects and all of the sub categories. You will find some very interesting and in-depth articles with photos and videos on a variety of subjects. I find HubPages to be filled with quality articles on just about everything.
I've included a link to some articles about rain forests that you may find interesting.
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.