More than 80% of the global city air pollution exceeds bid
The world health organization (who) has released the latest urban air quality, according to the database in the global 103 countries and regions, more than 3000 monitoring air quality in the city, more than 80% of the city air particulate matter (PM10) and fine particulate matter (PM2.5) pollution levels exceeding the standards recommended by who.Relevant experts pointed out that air pollution is a global "city disease", improve air quality need to advocate public transportation, improve the efficiency of energy utilization,...