Today we have the one of the biggest problems in the world, it’s the Air solution. The atmosphere in the form of a gaseous shell of the Earth is of great value, since it protects the planet from cosmic radiation, affects the relief, determines the Earth's climate and its thermal background. It cannot be said that the composition of the atmosphere was homogeneous and only with the advent of man began to change. But it was after the beginning of vigorous activity of people that the heterogeneous composition was "enriched" with dangerous impurities.
