In this issue we present three articles which all show that there is no dangerous warming created by antropogenic release of CO2. The so called greenhouse effect is impossible or very small. The first article is written by Ferenc Miskolczi presenting fundamental theoretical equations for understanding the observed global average radiative equilibrium. It is shown that this can be done from astrophysical considerations and some plausible assumptions of the composition of the Earth’s atmosphere and surface. He shows that the greenhouse effect producing global warming is impossible and without any theoretical or empirical support.