Could a Roman bridge carry a modern freight train? How much would it cost to build the Colosseum today? What if the Romans had grown potatoes?In a series of fast-paced essays, Leaky Aqueducts, Battle Pigeons, and Mystery Cults answers questions that historian Garrett Ryan has been asked in the classroom and through his popular YouTube channel Toldinstone. Discover the answers to: Were there pigeons on the streets of Rome? Were spectators ever harmed in the Colosseum? What did gladiators do after they retired?How did the Romans forget hieroglyphs? Did mosquitoes and rats cause the fall of Rome?