Singapore's government will co-operate with the WHO to study the long-term effects of breathing air polluted by regional forest
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/who-study-effects-haze
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/asian-age-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/forests