This is an older (from February) interview from Discover Magazine with Nobel laureate and neuroscientist Gerald Edelman. Edelman is interested in studying what makes each human mind so unique, and thinks he may have found the answer: natural selection of the brain!
"Neurons proliferate and form connections in infancy; then experience weeds out the useless from the useful, molding the adult brain in sync with its environment." His latest book, which I have no read, is called Second Nature: Brain Science and Human Knowledge.
I think this is an interesting theory, but need to read more about it before I feel comfortable forming any opinions on it. After reading the interview, let me know what you think.