Why environmental sustainability can most probably not be attained with growing production

The concepts of welfare, economic growth, production, environmentally sustainable national income, environmental sustainability, environmental function and asymmetric entering are defined, because the confusion about these concepts hampers sound information. Based on these concepts the arguments are enumerated why it is plausible that environmental sustainability most probably cannot be attained with a growing production level (national income, NI) and why broad acceptance of a lower production level, meaning de-growth of production, will make attaining this goal much easier or at least possible. Some consequences of unsustainable development are provided and the alleged conflict between employment and environment is refuted. The conclusion is that our planet is threatened by a wrong belief in a wrongly formulated growth.