In 2014, the World Health Organization (WHO) released data suggesting that Doha’s air is some of the most polluted in the world.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/toxic-particles-qatar%E2%80%99s-air-could-boost-risk-brain-diseases
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/doha-news-doha
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/qatar
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution