SocietyChoked by the air around herTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoSociety01/31/2015January 31, 2015Tsegi can’t breathe like other people. The young Mongolian has severe lung problems - that are man-made: she’s from Ulan Bator, one of the world’s most polluted cities.https://p.dw.com/p/1ESVaAdvertisement