How many years already we have this problems. I experienced aeroplane cannot land at Alor Star and have to landed at Penang Airport and waited until the sky clear. BUT what we have learned from that haze problems? we have meeting between countries involved Malaysia, Singapore and Indonesia. Evidence showed that forest fire in Sumatera (last time including Kalimantan). What is the solution? why we allow greedy business people dectate us. Enviromental education is very important to educate the locals so that they will look after their local environment such as this forest fire. Where are the scientists to help?

'Life threatening'

A Pollution Standard Index (PSI) reading above 300 is defined as "hazardous", while Singapore government guidelines say a PSI reading of above 400 over 24 hours "may be life-threatening to ill and elderly persons".

"Healthy people [may also] experience adverse symptoms that affect normal activity," the government says.

http://www.bbc.co.uk/news/world-asia-22998592