The ITER project is designed to demonstrate that the hydrogen fusion process that powers our sun and the stars can be controlled. The Bernard Bigot, Director-General of the international megaproject based in Cadarache in southern France, explains the principle on which it is based, how it works and the purpose of the programme: to prepare the replacement of the fossil fuels that are exhausting and damaging the earth with energy that will have no impact on the environment and the climate. ITER builds on expertise and innovation accumulated over decades and constitutes a major milestone in the effort to achieve the energy transition.



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