The contextAn unprecedented work of data aggregation, carried out by 17 European media (including “Le Monde” for France) gathered around the “Forever pollution project”, highlights for the first time the unsuspected extent (including for public authorities) of the contamination of the continent by Pfas: toxic substances whose extreme persistence in the environment has earned them the nickname of “eternal pollutants”. In all, 900 polluted sites and five of the twenty European factories of Pfas production have been identified in France, dizzying figures that the authors of the survey probably consider “undervalued.” The territories affected by Pfas pollution. dangerous substances