Hazardous smog has now blanketed parts of the northern provinces with air quality along the Thai-Myanmar border reaching unsafe level, and forcing border residents resorting to wearing hygienic facemasks and protective eyewear for protection.

Residents in Mae Sai district of Chiang Rai are now most affected by smog, caused by the ongoing of the destructive practice of slash and burn farming across the border.

Read more: thaipbs.or.th