Published on Saturday, March 17, 2012 by Kathy McCabe A long-lost fresco by Leonardo da Vinci may have been found this week at the Palazzo Vecchio in Florence. The unfinished work Battle of Anghiari appears to have beeen hidden behind the fresco Battle of Marciano by Giorgio Vasari. Da Vinci is thought to have started the depiction of the 1440 battle during the 16th century. Scientific researchers sent tiny pro...