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2007 was marked by a collective consciousness of the environmental crisis. It is regrettable that it happens so late, but it must be noted that it took time for the ecological imperative to emerge as a priority issue. Both the Grenelle of Environment and the Bali Conference have enabled to start a dialogue between the different actors who finally share the same analysis on the necessity of a deep economic, social and cultural evolution in our societies. The changes to operate are massive and the environmental policy will not be very easy to accept. In this context, a debate and a pedagogic explanation, not only on the analysis of the situation, but too on the solutions constitute the keys of the success.