More than 3,000 people were believed to have been killed when the River Arno flooded the streets of Florence on this day in 1333.More than six centuries later, 101 people died when the city was flooded on the same day in 1966. The 50th anniversary of the most recent catastrophe, which took a staggering toll of priceless books and works of art in the Cradle of the Renaissance, is being commemorated in the city today.The 1333 disaster - the first recorded flood of the Arno - was chronicled for posterity by Giovanni Villani, a diplomat and banker living in the...