In searching for a new enemy to unite us, we came up with the idea that pollution, the threat of global warming, water shortages, famine, and the like would fit the bill. In their totality and interactions these phenomena do constitute a common threat which demands the solidarity of all peoples. But in designating them as the enemy, we fall into the trap about which we have already warned, namely, mistaking symptoms for causes. All these dangers are caused by human intervention and it is only through changed attitudes and behavior that they can be overcome. The real enemy, then, is humanity itself.
Alexander King & Bertrand Schneider, The First Global Revolution: A Report by the Council of the Club of Rome (New York : Pantheon Books, c1991), pp. 107-108, 109-110, 115)