Dense fog covers Hà Nội as air pollution rises stockbot 0 175 2021.11.18 17:58 http://vietnamnews.vn/society/1081570/dense-fog-covers-ha-noi-as-air-p… + 14 https://vietnamnews.vn/rss/society.rss + 7 Hà Nội was covered by a blanket of fog on Wednesday. This is the third day in a row that a thick layer of fog has enveloped the capital.