White matter changes are most specific finding yet about Havana mystery attacks
                                
                                
                                    (Newser) -
                                    Doctors treating the US Embassy victims of  mysterious, invisible attacks  in Cuba have discovered brain abnormalities as they search for clues to explain the hearing, vision, balance, and memory damage, the  AP  has learned. It's the most specific finding to date about physical damage, showing that whatever it was...