A woman swims in a rooftop pool in front of the Petronas Towers, shrouded by haze, in Kuala Lumpur, Malaysia, September 13, 2015. The so-called “haze”, caused by slash-and-burn clearances on the islands of Sumatra and Borneo, has pushed air quality to unhealthy levels in Malaysia and neighboring Singapore. (Photo by Olivia Harris/Reuters)
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