Ceramic refers to objects made from clay that has been shaped and then hardened by heating it to very high temperatures in a special oven called a kiln. The intense heat causes permanent chemical changes in the clay, transforming soft, moldable mud into hard, durable material that won't dissolve back into mud when it gets wet.

Pottery, dishes, coffee mugs, and decorative vases are all ceramics. So are bathroom tiles, toilet bowls, and the insulators that protect electrical wires. Ancient civilizations discovered that firing clay in hot ovens created waterproof containers for storing food and water, a breakthrough that helped humans settle in one place and build cities. Some ceramic pots from thousands of years ago still survive today because fired clay resists decay so well.

Modern ceramics include advanced materials used in spacecraft heat shields, artificial joints for surgery, and even the clear braces some kids wear on their teeth. Scientists keep discovering new ceramic materials with remarkable properties. Some ceramics can withstand temperatures that would melt steel, while others conduct electricity in special ways.

When you see a beautiful glazed bowl or a simple flower pot, you're looking at one of humanity's oldest and most enduring technologies.