UN chief calls for efforts to address air pollution | Prothom Alo

Around the world, nine out of every 10 people breathe unclean air. Air pollution contributes to various diseases and causes an estimated 7 million premature deaths every year, predominantly in low- and middle-income countries, he said in a video message that was played at a virtual UN event to mark the first International Day of Clean Air for blue skies, Xinhua reported.