In this Thursday, September 17, 2015 file photo, a fireman sprays water to extinguish wildfire on a peatland field in Ogan Ilir, South Sumatra, Indonesia. Indonesian forest fires that choked a swath of Southeast Asia with a smoky haze for weeks in 2015 may have caused more than 100,000 premature deaths, according to new research that will add to pressure on Indonesia's government to tackle the annual crisis. (Photo by Tatan Syuflana/AP Photo)
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