For some years climate skeptics have been questioning the reality of global warming. These movements are financed by large industrial groups who significantly contribute to greenhouse gas emissions and who have set up scientific research teams, think-tanks and lobbying groups to defend their theories.

How do a few researchers spread their fallacious theories from one coast to the other, sowing the seeds of incertitude? Who supports them and why? In the US, London, Paris and Brussels, a battle for influence pits these merchants of doubt against international organizations (UN, European Parliament, etc.). This is the war being waged with the fate of the Planet held in the balance.