 He collaborated with Nicolas Hulot for 11 years, and co-authored the "", a book that directly led to the "Grenelle Environnement" during the first years of Nicolas Sarkozy's presidency.He is a member of the SOeS Scientific Committee (MEEDDEM observation and statistics department) and a member of the Fondation Nicolas-Hulot Strategic Committee.He is the founding president of , a corporate sponsored think tank established in 2010, which advocates a progressive phase out of fossil fuels from our economy.