Study: Pollution kills 9 million a year, costs $4.6 trillion
By Manish Swarup | Friday, October 20, 2017, 7:17 a.m.
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A cyclist pedals through the morning smog a day after Diwali festival, in New Delhi, India, Friday, Oct. 20, 2017. Environmental pollution – from filthy air to contaminated water – is killing more people every year than all war and