Famous duo pair up again in Manhattan concert as mayor applauds
                                
                                
                                    (Newser) -
                                    Paul Simon and Art Garfunkel appeared together in a surprise reunion at a Manhattan weekend concert, Reuters reports. It was only the third time the famous duo, now both 67, have performed together since a 2004 reunion tour. Garfunkel appeared on stage to sing The Sound of Silence, The Boxer...