The most acute problem in the cities of developing countries.
Six million people a year die due to poor quality air. This was stated Maria Neira Maria Neira, Director of who Department of public health and environmental and social determinants of health. According to the expert, contaminated with more than 90 percent of the air of the Earth.
Experts came to such conclusion based on the analysis of data collected from satellites and ground sensors with three thousand points around the globe. Scientists ‘ attention was focused on the content in air of particles with diameter less than 2.5 microns (PM2.5). They contain toxins such as sulfate and black carbon, which can penetrate deep into the lungs and the cardiovascular system. Air quality is considered to be low when a concentration of 10 micrograms per cubic meter.
Who experts found no evidence that facial mask can effectively filter the polluted air. In addition, staying indoors also does not protect from smog and other types of smoke.
The most acute problem in the cities of developing countries, however, the condition of the air in the countryside of Western Europe and the United States also leaves much to be desired, experts say. The who encourages governments to reduce the number of vehicles on the roads, to improve technology to reduce emissions and use cleaner forms of fuel.
