A thick, acrid haze has smothered Malaysia, Indonesia and regional neighbour Singapore once again this year, as Indonesia’s annual burning sends clouds of smoke billowing over the region.
As Indonesia’s president Joko Widodo recently announced, even having sent 3,700 soldiers and 8,000 police officers to address the problem, tackling the fire and reducing the root cause of the haze could take years. So what do we know about the haze and its effects?