This is Origins and Five. Five minutes, one word, a small story to start the day. Today's word is malaria. Before going into the specific origin of the word malaria, I want to start a few centuries earlier, in ancient Greece. In the fourth century BCE, there was a famous Greek doctor named Hippocrates. This name may sound familiar to many folks. The Hippocratic Oath, which is named after this ancient Greek doctor, is something many aspiring doctors take before entering the profession, where they commit to follow certain ethical standards. But Hippocrates was known for more than his oath. He also published a very influential treatise called On Air, Water, and Places. In this treatise, he explained how certain environments caused illness. In particular, he suggested that poisonous vapors or infectious mists rising from decaying carcasses or waste caused all manner of disease. The theory was named the miasma theory and was widely accepted in Europe and China for centuries. Interestingly, one of the driving forces behind the sanitation efforts in big cities in the 1800s was that it smelled so bad, and because people still thought in terms of the miasma theory, the conventional wisdom was that the smell was making people sick. So big cities engaged in huge cleanup efforts. In effect, they ended up doing the right thing, focusing on sanitation, but for the wrong reasons. Let's now pick up the story of the word malaria in the 1700s in Italy. This is still prior to the advent of modern medicine where people did not know about bacteria, viruses, or parasites. They didn't know that mosquitoes could carry disease. So when illness struck, they looked to the miasma theory and turned to the environment for explanations. And in swampy areas, places with standing water and thick air, people often got very sick. So they came up with a theory. They believed the sickness came from the air itself. In Italian, malaria literally means bad air. So they thought the marshes and swamps smelt very bad, especially at night. Breathing in this bad air was thought to cause fever, chills, and death. So the illness became known as malaria or bad air. Of course, we know now the real cause. Malaria isn't spread through air at all, but by infected mosquitoes carrying a parasite. The swamps were part of the story, but only because they were perfect breeding grounds for mosquitoes. The bad air wasn't the culprit, just a misleading clue. But by the time science caught up, the name had already stuck. It's a fossil of an old idea, a snapshot of how people once tried to make sense of disease without the tools we have today. Even though the explanation was wrong, the word survived. So every time we say malaria, we're echoing a centuries old guess about the world, one that turned out to be off the mark. And that's Origins and Five. One word, one story to start your day.