EN
A sustainable development of information and knowledge society is a condition either of open access to such a resources, or protection of “naturalness” of human information environment. Effects of the hitherto activities for sustainable development of the modern society are insufficient. We cannot discuss a sustainable development if many people can neither answer their fundamental information needs, nor use information effectively because of its redundancy. It seems however, that there are potential means to reach the goal, offered by information ecology, aiming in homeostatic balance in an “antropoinfosphere”.