Man's ability, on the one hand, to create supreme works, in science and art, in terms of humanization in behavior, and on the other hand, he also carries within himself a "talent" for finding ever more perfect means of self-destruction. One such danger was presented with the explosion of the atomic bomb during World War II. It hinted at the potential probability of a definitive cataclysm of the entire world. Since then, man's fear for his existence, for the existence of his offspring, of the entire human race and of everything that planet Earth means, has been much more present.