Mongabay: Nearly 500 fires are burning across the Indonesian island of Sumatra, raising fears that choking air pollution could return to Singapore and Malaysia.
The fires, set to clear land for agriculture, are concentrated in Riau, Jambi, and South Sumatra provinces. Like the fires that charred the region two months ago, much of the burning is taking place on peat soils, making them difficult to extinguish.
However unlike the June fires, which triggered severe air pollution warnings in neighboring Singapore...