A boat is anchored at a jetty at the haze-covered river mouth of Sungai Muar in Muar, in Malaysia's southern state of Johor bordering Singapore, June 20, 2013. Singapore's air quality deteriorated to "hazardous" levels on Thursday as smoke from forest fires in Indonesia obscured skies over the wealthy city-state and parts of Malaysia and disrupted some businesses and travel. In Malaysia, the southern state of Johor was the worst affected. Air ...
more A boat is anchored at a jetty at the haze-covered river mouth of Sungai Muar in Muar, in Malaysia's southern state of Johor bordering Singapore, June 20, 2013. Singapore's air quality deteriorated to "hazardous" levels on Thursday as smoke from forest fires in Indonesia obscured skies over the wealthy city-state and parts of Malaysia and disrupted some businesses and travel. In Malaysia, the southern state of Johor was the worst affected. Air quality in the coastal town of Muar worsened in the "hazardous" category, forcing 211 schools to close. REUTERS/Bazuki Muhammad (MALAYSIA - Tags: ENVIRONMENT HEALTH MARITIME)
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