Climate warming is, for the first time, one of the major issues in the French presidential elections. Each candidate pledges his credibility on the answers he proposes but these ones are frequently hazy and even sometimes in contradiction with the other proposals inscribed in their programs. To announce ambitious objectives about the reduction of greenhouse emissions is not enough. The achievement of these objectives must be credible and square with the challenges with which the world is confronted. To bring convincing answers, it is necessary to take into account three realities.
First, climate warming is a global phenomenon. It is ...