To prevent positions extremely exaggerated, alarmistas and passionals of heralds of the apocalypse is the way more indicated to understand the problem better. In case of doubts on so antagonistic positions for a quandary so complex, still for times covered of uncertainties, has of if making choices. In this scene, the way most correct is the action in the direction to protect the environment, therefore in the nature punishment does not have prizes nor, only consequncias, and is certain that the human being modified the chemical composition of the planet. Still one is unaware of the limits of tolerance of the nature and which its break-even point, but it is known that many limits had been exceeded and science and the technology, in set with forces of common-sense of the organized society, go to show the ways of the ambient preservation and the homostasis of the planet. After all, since the primrdios, the man interacts with the environment in search of balance and survival, and this harmony is obstructed by the population increase sped up and consumption on a large scale of the natural resources. The Holoceno period, during which it appeared and if it developed the civilization human being, propitiated extensive and longeva comfort zone, with climate and temperature in balance state and few abrupt changes. On the other hand, a critical moment is lived where the environment comes firmly being lead for a disequilibrium point, without return to its statu is better status quo.

All climatic system, given to its non linearity, can be loosed balance quickly of a state for another one, in search of a new stability, with consequncias unexpected, but certainly catastrophic. The ecosystems have to have the capacity of resilience or elasticity necessary to support the deformations and to retake its form original, in order to supply foods, energy, water and climatic stability in favor of the balance and of the continuity of the life. However, if it does not respect the necessary time for the recovery of the natural capital, for the opposite, is extracted more of the nature than its capacity of restoration. Per long years, the human being has committed the injure-humanity crime, when transforming, to modify and to attack the four physical elements of the nature: the ground, the water, air and the solar energy. Much time was lost in the race for the mitigao of the actual damages for the human being to the nature, a time that not return more and that certainly it left serious consequncias and sequelas. It is possible to see the past, but not to modify it, already the future can be influenced, but if it cannot see it. It is preferable, then, that the current generation can be recognized in the future for having acted of firm form and resoluta in the protection of the environment.

The future is constructed to day after day, rock on rock. It has given, facts and information that they make possible to enxergar to the front without great myopic distortions, of form to allow the taking of safe decisions to offer to the future generations a healthful life and of quality. The current generations, guests and gentlemen of the nature, who had not inherited the planet Land of the grandmothers, but had not taken loaned by its children, must take care of to the necessities and aspirations of the gift without compromising the capacity also to take care of to the ones of the future. This is sustainable development: perennial, perpetual, perpetual, that it imposes limits for a survival question.