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Earth’s atmosphere is a gaseous body surrounding the earth and has direct effects on the life and health of people.

However, the atmospheric environment has seriously been polluted in many parts of the world and to solve this issue is an urgent problem that can no longer be postponed.

According to data available, air pollution is a major contributor to different diseases, including cerebral apoplexy, heart troubles and lung cancer, and takes a leading position among the common causes of death.

In March this year, a Swiss organization released a report on the global situation of air pollution of last year.

According to it, the result of an analysis of the concentration of PM2.5, a fine dust, in the atmosphere of 9 446 cities in 143 countries and regions showed that air pollution might result in health damage centring on South Asia.

An emergency warning was issued on March 30 as regards the serious air pollution in the northern part of Thailand.

That day, the concentration of PM2.5 was reportedly far beyond the safety standard in the area.

In particular, the concentration in Chiang Mai was the highest at 292.6㎍ per cubic metre. 

On April 8, the PM2.5 concentration was more than twice that of the safety standard in several parts of Laos.

In December last year, an air quality assessment index of over 400 was recorded at 27 observation stations throughout Delhi, India, while in Hanoi, the capital of Vietnam, the PM2.5 concentration was about 13 times higher than the safety standard set by the World Health Organisation, causing public concern.

The World Meteorological Organization issued an estimate that 8 million people die early every year due to air pollution, noting that the cause of this is related to climate change.

Due to the climate change caused by global warming, high temperatures and droughts are persisting in different parts of the world and the number and scale of forest and field fires are growing, which is one of the main causes of air pollution.

Besides the pollution caused by natural disasters like sand dust, the emission of large amounts of dust, smoke and toxic gases from factories, enterprises, automobiles and airplanes is also an important cause of air pollution.

Experts say that polluted air threatens the existence of mankind, calling on all countries to pay greater attention to the efforts for preventing air pollution and take decisive measures.