Air pollution: Thailand schools still closed due to 'unhealthy' smog levels
Source: bbc, Date: , 2019
Toxic smog in Bangkok, Thailand, has forced more than 400 schools to close to protect children from its harmful effects. The capital city is experiencing some of its worst-ever air pollution levels, caused by ultra-fine dust particles known as PM 2.5. Traffic exhaust, construction works, burning crops and pollution from factories are blamed for the haze.The government's efforts to clear the air have so far failed. It has tried creating rain clouds using special planes, reducing traffic, and hosing down streets, with little impact. According to The World Air Quality Index project, Bangkok's Air Quality Index (AQI) is currently at around 170, making it "unhealthy". Those celebrating the Lunar New Year holidays this week have been asked not to burn incense or light fireworks.