| In the middle of the twentieth century in the industrial cities in USA in the winter period there took place such a hard episode of the smoky fogs that it revealed the death increase apparently. On December in 1952 year in London during several days 4 000 (four thousand) people died from the high concentration of the admixture of soot and sulphate that formed from the polluted air masses like a unmoved thick fog. The old aged people and children belong to the most high risk group in this matter. Nowadays smoggy is not problem in the Western Europe because it is established severe control on air pollution.
The air cleanness becomes better in the developed countries based on the installation of the high valued philters and catalysts in the industrial and transport sector. In the under developed countries, which has economic crisis the atmosphere air condition becomes worse.
|
