If you are staying within the field of biology, there is no need to start over. You will have to contact schools that offer your specific program of study, and request information concerning any prerequisite coursework. Within the same field it is just a continuation.
If your PhD is within another field, the same applies. You would have to complete any missing prerequisite coursework.
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.