Every year scientists are increasingly involved in the scientific debate on anthropogenic influences and their consequences in relation to climate, the preservation of the ozone layer, increasing greenhouse gas concentrations etc. Often these discussions turn into political disputes, although all these issues are purely physico-chemical and needs to be addressed to methods, primarily of chemical kinetics. Without exception, all natural ecosystems have been formed for millions of years, and those that have survived to date, undoubtedly have a solid reserve of stability and behave on the principle of homeostat. Any external influence causes an oppositely directed response of the system. The question of the ability of natural systems to self-repair is reduced to the quantitative assessment of two main parameters: (1) the "buffer capacity" of the environment and its comparison with the scale of the disaster; (2) the characteristic times of the attack and its neutralization. The report examines examples of accumulation and loss of radiocarbon, stratospheric ozone and the potential impact of greenhouse gases on "global warming".