Nuclear fusion is seen as a possible visionary solution to the energy problems of the future—clean and comparatively low-risk. Small atomic nuclei are fused at extreme temperatures and pressures instead of being split as in the reactors of conventional nuclear power plants. A similar process takes place in stars and therefore also in the sun. This generates an enormous amount of energy—without releasing CO₂.

The idea of using nuclear fusion to generate large amounts of energy in a climate-neutral way is considered a dream of mankind. However, nuclear fusion is technically extremely demanding, and its realization requires not only immense investment but also ambitious research and development.

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