Flexi Says: Human cannot fly as they do not have body anatomy, like birds, that can support flight. Birds have lightweight bones, feathered wings, efficient lungs with air sacs, and an aerodynamic body design ideal for flight, whereas, humans don't. However, Mark Drela, an aeronautical engineer at MIT, could fly using a human-powered flight that is an aircraft with fixed wings and propellers and is driven by leg pedaling.
