Six-legged, all-terrain robots are popular research projects. But is it also possible to build a robot that stands stably on one leg and moves by jumping? Anselm von Wangenheim (18) from Kassel set out to answer this question. Using complex simulations, he was able to show that it is physically possible to construct a so-called monopod - a one-legged robot that moves by tilting and is prevented from falling over by the rotation of a flywheel mass. The young researcher can also report his first experimental successes: Using shashlik skewers, wood glue and sensors, he has already managed to build a duopod.