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The fusion of hydrogen nuclei is the energy source of stars. For more than 50 years, researchers have been working on making this process usable on Earth. The potential of an almost unlimited energy source for base load consumption has its appeal: the primary fuels deuterium and lithium are plentiful on Earth and the resulting radioactive waste is significantly less critical than in fission power plants. Could this make an important contribution to solving the global energy problem? Based on the description of the 'sun's fusion reactor', Hartmut Zohm, Director of the Max Planck Institute for Plasma Physics in Garching, explains in his lecture how a fusion power plant on Earth is to be realized. He focuses in particular on the confinement of hot hydrogen plasmas in magnetic fields in tokamaks and stellarators, but also outlines inertial fusion. The current status of research and the latest results are presented in detail. Finally, the plans for the ITER experiment currently under construction and various roadmaps for the fusion power plant will be discussed. Moderation: Prof. Dr. Markus Vogt, Professor for Christian Social Ethics at the LMU Munich In cooperation with the Catholic Academy in Bavaria