Study: Pollution kills 9 million a year, costs $4.6 trillion
By Ng Han Guan | Friday, October 20, 2017, 7:17 a.m.
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FILE – In this Dec. 12, 2015, file photo, visitors to a park gestures at each other near chimneys spewing smoke in Beijing. Environmental pollution – from filthy air to contaminated water – is killing more people every year than