The pollution at this time of year comes mostly from China, but soon it will be home grown with the burning season in Thailand, Laos and Cambodia. It's the same every year, but getting worse. The farmers need tractors to plough in the stubble instead of burning, but the government prefers submarines. For the cost of 3 Chinese submarines they could buy 30,000 tractors, 3 for every Tambon. They could rent them out and even get a small return. Instead of platitudes about working from home the government has the means to change it, and it's time they looked after their people instead of their egos.