Air pollution kills six million people every year: Study
Due to such high death tolls, air pollution is now world's fourth-largest threat to human health, behind high blood pressure, dietary risks and smoking.
Jun 29, 2016, 14:10 PM IST
Due to such high death tolls, air pollution is now world's fourth-largest threat to human health, behind high blood pressure, dietary risks and smoking.
Jun 29, 2016, 14:10 PM IST