The Thai capital Bangkok is experiencing the worst air pollution in a year, prompting authorities there to study the possibility of getting rid of this pollution by rain.
Greenpeace, a non-governmental organization, said that particles with a diameter of less than 2.5 cm and considered to be the most damaging to health, in some areas of the capital, reached 102 micrograms per cubic meter of air.
This figure is significant, as the World Health Organization estimates that the maximum daily exposure level of these particles should not exceed 25 micrograms per cubic meter, according to the French newspaper Le Parisien.
The reason for this large number of suspended particles in the air is the absence of wind and rain, in addition to the high humidity and the presence of air cover above the city prevents the dispersion of pollutants, hence the idea of artificial rain to drop particles suspended in the air.
The technology, developed in the United States in 1946 and used regularly in Russia and China, is based on injecting crystalline particles into clouds (mostly silver iodine crystals) to collect water droplets around the crystals and eventually fall.
The Director-General of the Pollution Control Department, Paralong Dumongthai, played down the danger that the expected rain on Tuesday would cause any disasters, noting that schools in the city were still open.
Pollution in Bangkok has become a recurring phenomenon. In the past winter, pollution continued from the end of December to the end of February.
The Green Peace activists were handed over in late February 2018 to the junta symbolically, a glass watch full of Bangkok's polluted air.