CFL stands for Compact Fluorescent Lamp, a type of energy-efficient light bulb. Unlike traditional incandescent bulbs, CFLs use a gas-filled tube and a small amount of mercury to produce light. They consume less electricity and last much longer, making them a popular choice for homes and businesses looking to save on energy costs. Using CFLs can significantly reduce your carbon footprint, as they require less energy from power plants. Many people choose CFLs to help the environment while also enjoying lower electricity bills. However, it's important to handle them carefully due to the small amount of mercury they contain, which is why proper disposal is essential.