Italy to seek "lost Leonardo" behind Florence wall

One of the art world's great mysteries may be about to be solved: Did Leonardo Da Vinci paint a masterpiece that was lost in time, and does it still survive today?

Italy's culture minister gave his go-ahead on Wednesday to explore behind a wall in Florence's renaissance town hall to see if it is hiding the 500-year-old "Battle of Anghiari," sometimes known as the "lost Leonardo."