[en] This document proposes a brief presentation and the table of contents of a book in which the authors discuss the reasons of the denial of global warming, try to explain the massive diffusion of these doubts about a fact which is matter of scientific consensus, comment the role of media in the diffusion of these doubts, try to identify the lobbies and agendas who have interest in spreading these doubts. They discuss why and how these controversies emerge everywhere in the world, discuss the debated uncertainties. They identify and comment actors, speeches and strategies of climate change scepticism in France, in the USA and in China. Thus, this book addresses the relationships between sciences and policy