There are many many speculations on how mad cow disease can be spread. One theory is that it is spread by the manure of infected animals. They do however know that it can not be spread by animal to animal contact.
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.