Poor air quality kills 1.4 million people in India annually
In China, burning coal is the biggest contributor to poor air quality.
Feb 14, 2016, 15:44 PM IST
Air pollution kills over 5.5 million people worldwide annually
Power plants, industrial manufacturing, vehicle exhaust and burning coal and wood all release small particles into the air that are dangerous to a person's health.
Feb 13, 2016, 12:23 PM IST