Have you ever stopped to marvel at the exquisite nature of our ability to hear? The intricate machinery that is the human ear allows us to experience the world in a unique and wonderful way. However, for those with severe or profound hearing loss, the world is often a quiet place. This is where cochlear implants come into the picture, revolutionary devices that have restored the sense of sound to thousands of people around the world. Today, I’d like to peel back the layers of complexity and explain how these miraculous inventions work.