A court in Italy has dismissed an appeal by Amanda Knox against her conviction for slander in connection with a 2007 murder that made headlines worldwide. Almost ten years after Knox was acquitted of the murder of 21-year-old British student Meredith Kercher in the central Italian city of Perugia, an appeals court in Florence on Wednesday sentenced her to three years in prison for falsely implicating a local barman in the case. Knox will not serve the sentence after she spent four years in prison in Italy following her initial murder trial, which was overturned in 2011. The 36-year-old was in …