Researchers at the ancient city of Hippos have unearthed a unique lead sling bullet. The bullet itself isn’t so special, but what’s inscribed on it is: a sarcastic Greek command, ΜΑΘΟΥ (“Learn!”).

Here’s what you’ll learn when you read this story: Weapons of war in ancient times often included slingshots fired from great distances, and sometimes, the most lethal part was personalized. Ancient ...