The very cells that created us may have a role in saving our lives. Scientists have always been amazed by the energy production system in a sperm’s tail. The system drives flagellar movement and is extremely efficient, like a high-speed vehicle with a self-charging system, independent of external energy sources. Now, Cornell researchers are mimicking such a system in the hopes of advancing fields such as human and animal health. They hope to use their findings to create implantable medical devices that utilize blood sugar to make products as well as support in drug delivery.