Richard Ramirez had been on death row
                                
                                
                                    (Newser) -
                                    California's "night stalker" is dead. Serial killer Richard Ramirez died this morning at a hospital after being transferred there from San Quentin, reports  AP . The 53-year-old died of natural causes, but specifics aren't known. Ramirez was convicted of killing 13 people during a rampage in 1984 and...