Air Pollution Deadlier Than Smoking or War

US researchers have said that air pollution, primarily caused by burning fossil fuels, is the world's top killer.
The findings were published in the University of Chicago's Air Quality Life Index on Monday and represent an attempt to find out the extent to which tiny particles ingested from polluted air shorten life, Forbes reported.
Across the globe, the average person is losing 1.8 years of life expectancy due to particulate pollution exceeding the World Health Organization’s guideline and that is worse than first-hand cigarette smoke, alcohol, HIV/AIDs, and conflict.