Seoul Had the Second-Worst Air Quality in the World This Morning

Early this morning, Seoul had the second-worst [http://www.yonhapnews.co.kr/society/2017/03/21/0706000000AKR20170321050000017.HTML?template=2087] air quality in the world, after New Delhi. According to AirVisual [https://airvisual.com/world], an air quality monitoring site, things improved somewhat in Seoul as time went on. But as of noon local time, the South Korean capital was still in 8th place for terrible air, just behind such pristine cities as Dhaka, Lahore, Beijing and Shanghai. Busan