This virtuous but yet imprecise concept opens to various and often conflicting interpretations that may, sometimes, let us a bit confused and disappointed. But year after year the critical situation of the environment and, as a consequence, of the planet is more and more clear to the world and became a global standard that addresses the needs of both present and future generations. This is one of those moments in history when thousands of committed and worried citizens start speaking with one voice, even screaming if necessary, so that their fears, needs and calls can be heard from politicians and lobbies. From small local committees and associations up to the biggest parties and International Organizations around the globe: this worldwide self-examination had, and still have, consequences and reactions from every corner of the Earth. It is an incredible example of how powerful the so-called bottom-up approach can be.