TEST YOURSELF: Why so hazy? Chiang Mai spent several days this month as the most polluted city on the planet, with PM2.5 levels reaching 226 microgrammes per cubic meter (μg/m³). A report released in February by Greenpeace attributed 14,000 deaths in Thailand in 2020 to air pollution. The Charoen Pokphand Group (CP) is Thailand's largest agri-business corporation and grows a lot of corn in northern Thailand. A scientist from Chiang Mai University said that during 2010 to 2015, 80% of the pollution in Chiang Mai was from Myanmar.

Source: Bangkok Post March 25, 2021 05:37 UTC