There are many science fairs across the united states, mostly held by local universities for local high school seniors. There are a few science fairs sponsored by private corporations most notably: Intel ISEF 2011 , Los Angeles Convention Center Will be held in Los Angeles, CA on May 8-13, 2011.
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.