Archaeologists have uncovered a 2,000–year–old sling bullet with a taunting message for its target – 'Learn your lesson'.The small, almond–shaped weapon, which would have been shot out of a handheld projectile pocket, was found in the remains of the ancient city of Hippos in Israel.It measures 3.2 x 1.95cm (3.2 x 0.76 inches), weighs 38 grams and was likely used by the Greek defenders of the city.While dozens of lead sling bullets have been found at the site, this one stands out – as it is the first one to bear this specific inscription...And it joins similar bullets inscribed with...