Levels of particulate matter 2.5 micrometres or less in diameter (PM2.5) have reached the "unhealthy" red zone throughout the North and the upper Northeast, with the highest level exceeding the safe threshold of 50 microgrammes per cubic metre (µg/m³) by over eight times, as people in Chiang Mai have been urged to stay indoors and work from home at this time.
The State Railway of Thailand has started excavating the 6.2-kilometre tunnel which will connect Den Chai in Phrae with Chiang Rai's Chiang Khong district, which lies on the banks of the Mekong River.
Global campaigns to cut carbon dioxide emissions not only alert businesses to new non-tariff barriers imposed as part of efforts to fight global warming, they can also lead to new opportunities in the clean energy sector.
Chiang Rai locals upset at Lao dam plan bangkokpost.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from bangkokpost.com Daily Mail and Mail on Sunday newspapers.