Thousands evacuated from city of Koblenz
                                
                                
                                    (Newser) -
                                    Germany today successfully defused a  massive unexploded World War II-era bomb  it found in a depleted riverbed in Koblenz, reports the  AP , after having evacuated some 45,000 residents. The 1.8-ton bomb could have wreaked serious damage if it exploded. Experts also defused a 275-pound American bomb found alongside...