An interview, movie project tipped Mexican authorities off to Joaquin Guzman's location
                                
                                
                                    (Newser) -
                                    "My head is swimming, labeling TracPhones (burners), one per contact, one per day, destroy, burn, buy, balancing levels of encryption," begins the just-released and already-controversial interview in  Rolling Stone . The writer is Sean Penn, and his subject is as unlikely as he is sought-after: Joaquin Guzman—known equally...