Showing 1 - 1 of 1
News, Gary Boyle, Published on 21/03/2021
» 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) there. The predictability of the annual surge in pollution and the lack of effective preventative action have angered city residents and concerned civil society groups.