Scientists find the cleanest air in the world

Scientists believe they have identified the region with the cleanest air quality in the world, free of dust particles caused by human activity.

According to CNN (USA), researchers at Colorado State University have discovered that the atmosphere in the Southern Ocean surrounding Antarctica is not affected by human activities.

Airborne aerosol particle sampler in the Southern Ocean. (Photo: CNN)

During the study, Professor Sonia Kreidenweis and colleagues realized that the boundary layer air producing low clouds on the Southern Ocean was free from aerosol particles (gas dust) produced by activities such as natural combustion. materials, crop cultivation, fertilizer production, waste water treatment or emissions from vehicles . Aerosol particles can be liquid or solid with micro-size suspended in the air causing the cell. infected.

After learning about the composition and bacteria in the lower atmosphere in the Southern Ocean by means of decoding DNA sequences, understanding the origin and direction of the wind, co-author Jun Uetake concluded. aerosol particles from the mainland and human activities cannot move south and blend into the atmosphere here. 

In an article published on June 1 in the journal Scientific Proceedings of the National Academy of Sciences, researchers described the area as 'truly pristine'. '.

Air pollution is currently one of the serious public health crises facing the world. According to the statistics of the World Health Organization (WHO), each year air pollution has claimed the lives of 7 million people. Studies show that air pollution increases the risk of heart disease, stroke and lung cancer. According to WHO, over 80% of people living in urban areas are exposed to air quality that is harmful to health.