Ultrafine
Ultrafine dust density level in Korea falls to 5-year low – Beragampengetahuan
People wearing masks walk along Gwanghwamun Square in central Seoul, after a fine dust alert was issued, March 29. Yonhap By Jung Da-hyun The concentration of ultrafine dust in Korea from December to March fell to the lowest level in five years, the Ministry of Environment said on Sunday. The ministry attributed the reduction partially […]