Grenelle Environment: “Grenelle Environment” [00:30]# The Grenelle Environment summit is seeking to promote “green” development that will change the world in a positive way. Oilfields mutate into solar units, while houses are swallowed up by the earth and replaced by more energy-efficient constructions. Congested roads give way to routes covered with greenery on which trains are to be seen traveling. Super: “Grenelle Environment. Welcome to a new World.”