Singapore again ranked as the world’s most polluted city on Monday, according to Swiss-based air quality monitor IQAir, as the fires on Borneo and Sumatra islands – intensified by a turbocharged El Nino weather phenomenon – keep emitting toxic haze.
The city state has rolled out subsidies for haze-related medical treatment and schools were closed in parts of neighbouring Malaysia, as both countries grapple with persistently unhealthy air quality due to fires in nearby Indonesia.
The fires have...