Presentation What is Gaia? Conscience of Gaia Will of Gaia Pathologies of Gaia    Climatic change What is it? Actions    Responsible consumption Campaigns	THAT IT IS GAIA? The following description has been transcribed of the place web GaiaSur. In the decade of 1970, the Dr. James Lovelock was hired to design chemical tests of detection of life. The same ones would be mounted in a future probe to send to the planet Mars. In the course of this task, it became necessary to define what the life is in a wider sense that like it can be recognized in our planet Earth. Lovelock elaborated this way a possible operative definition: you could consider I live to any system that generates and maintain internal sub-systems that they help him to be ordered and to maintain constant their internal conditions (homeóstasis capacity). One of the conclusions of this definition is that the alive beings can stay in a constant state, call stationary state that is different from the balance. In later investigations, the Dr. Lovelock observed that certain variable chemical and physique of our planet (the salinity of the seas, the composition and atmospheric temperature, etc.) they maintain constant values (stationary) but that they are not those of balance. The Dr. Lovelock suggested then that the interActions of the alive beings to each other and with its environment they were those responsible for the maintenance of this stationary states. Then, if we consider alive to those systems that maintain stationary states different from the thermodynamic balance, generating and maintaining systems ad hoc, if the internal conditions of the Earth stay constant (and far from their balance), and if it seems that certain important environmental variables of the Earth stay their values constant grace to the alive beings and their interActions, then... ...el planet Earth can be considered an alive being. The Dr. Lovelock is an extremely creative and poetic type. Instead of calling to their theory Homeóstasis of the terrestrial physical-chemical variables and their interrelations etc. etc...." he/she called it Theory of Gaia, in memory of Gaea, the goddess earth of the Greeks, similar to the Pacha Latin American Suckles. According to the theory of Gaia, the conditions at the moment reining in the planet they are not the mere result of physical-chemical reActions but rather they are maintained this way by the group of alive beings of the planet (the biósfera) and the interaction with their environment. We could explain this with a simple analogy between the planet and our own body of human. Each species would be then similar to a " organ " and the interaction among these it would maintain our temperature (in spite of the external cold), our pH and level of sugar in blood (although the ingesta of foods varies in its composition), etc., as well as the salinity of the seas, the temperature and composition of the atmosphere, etc. in the Earth. However, the humans are much more than a heap of organs: the everything is more than the sum on their behalves. According to this vision, we all are related and the disappearance of a species is a tragedy for all the other ones, as much as the loss of an organ it is terrible for our own organism. This focus that seems to sin of philosophical excess, doesn't underrate the pragmatic focuses but just the opposite, the power. From an utilitarian point of view (the genetics and their applications in medicine for example), the disappearance of an animal species or vegetable and their genoma (group of genes) it means the loss of millions of possible even unknown treasures. He/she also explains why there are topics that require an interdisciplinary focus to be approached with success. Among other things, this theory not only justifies the appreciation, but the necessity of the diversity to maintain the global stationary state, since each species completes an or more functions matters inside the global symphony.