The Wider Image: Mongolia's toxic smog
A protester wears a face mask and holds a banner during an anti-pollution protest in central Ulaanbaatar, Mongolia January 28, 2017. The banners read ÒSmoke-free Ulaanbaatar,Ó ÒNo More Agony for Ulaanbaatar,Ó ÒThe Solution to Reducing Air Pollution is Urban Development". REUTERS/B. Rentsendorj SEARCH "RENTSENDORJ POLLUTION" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.