As global pollution edged upward in 2021, so did its burden on human health, according to new data from the Air Quality Life Index (AQLI). If the world were to permanently reduce fine particulate pollution (PM2.5) to meet the World Health Organization's (WHO) guideline, the average person would add 2.3 years onto their life expectancy—or a combined 17.8 billion life-years saved worldwide.
, with the impact on life expectancy comparable to that of smoking, more than three times that of alcohol use and unsafe water, and more than five times that of transport injuries like car crashes. Yet, the pollution challenge worldwide is vastly unequal.
The collective current investments in global air quality infrastructure also do not match where air pollution is having its greatest toll on human life. While there is a large global fund for HIV/AIDS, malaria, and tuberculosis that annually disburses 4 billion USD toward the issues, there is no equivalent set of coordinated resources for air pollution.
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