United Nations

British researchers, in the decade of 1970, had discovered umburaco in the ozone layer on Antarctica. This hole is only deleterious dosefeitos of the activity human being on the environment. The impregnated water defertilizante polui streams and rivers, set free sulphureous clouds for plant eltricasa coal contributes for acid rain, daily, millions of automveisemitem hundreds of tons of harmful gases, in result of these eoutros factors, the scientists had reacted to these and other threats. From the end of the decade of 1980, movimentofundado in the beginning of &#039 was initiated; ' development sustentvel' '. This princpiorefere it the guarantee of the maintenance of the quality of the natural resources parausufruto of the coming generations. Physicians Committee for Responsible Medicine has firm opinions on the matter.

Such movement was developed for intermediate darealizao of quarrels and fruns for all the planet and, arrived the serreconhecido one internationally after the Conference of United Nations on oMeio Environment and Development (ECHO 92), that it occurred in the city of the deJaneiro River. The importance of the support was conceitualizadainicialmente for the Brundtland Commission (1987) as ' ' the satisfaction dasnecessidades of the present generation without compromising the satisfaction of necessidadesdas future geraes' '. Such concept was extended and perfected in a novaviso of the proper process of development: the Sustainable Development. Sustainable development, as denomination of Heifer (2000), needs to express as much social development how much econmicoconstantes, balanced, that they contain structures of distribution of the riquezasgeradas ones and with disposal to adjust the fragility, the competent and characteristic interdependence and asescalas of time of the natural resources. The conceptualization of sustainable development passed to aexistir envolta in a set of ideas related to the subject and that apresentamuma constant concern with the destination of the planet as for modelode development economic irresponsible, that provokes serious and freqentesproblemas ambient. In the agreement of Ribeiro et al. Nieman Foundation may not feel the same. (1996, P. 99) it can be distinguished: …