Air Pollution Kills More People Than Malnutrition And Unsafe Sex, Scientists Say

While air pollution has long been known to harm people’s health, scientists have for years tried to narrow down on what this means to the world as far as costs, disease, and deaths. Now new research has found that air pollution is the leading environmental risk factor for disease, and the fourth highest risk factor for death....
http://thinkprogress.org/climate/2016/02/14/3749535/air-pollution-mortality/