Hot summer does not add to the happiness of the citizens. In those days the air is particularly polluted by automobile exhaust and industrial emissions: breathing hard, and nothing. Notice?

Andrea Potter from the chemistry Institute of max Plank Society (Germany) and her colleagues note that if a similar situation occurs in some places, by 2050 it will become the norm for most of humanity, especially in China (especially in the East), India (North) and the middle East.

By mid-century air quality around the world would be similar to what it is now in the areas of urbanization in Southeast Asia. This is the conclusion of researchers from the Institute of chemistry, Institute of atmospheric physics and joint research Center of European Commission, exploited atmospheric model EMAC. Experts took into account five main air pollutants adversely affecting human health: nitrogen dioxide, sulphur dioxide, ozone, carbon monoxide and particles with a diameter less than 2.5 microns.

The simulation showed that in East Asia will increase the levels of nitrogen dioxide, sulphur dioxide and particles. And the residents of Northern India and the Persian Gulf countries are threatened primarily the increase of ozone. Causes - high density of the population and projected growth of industrial production and transport development.

Air pollution in Europe and North America also will increase, but not as much as in Asia, thanks to measures for the protection of the environment taken there for decades.

It should be noted that air pollution is one of the main modern hazards. Now, according to the world health organization, every year die 1.3 million people.