Most of the world’s population lives in areas where air quality is unhealthy. An estimated 95% of people live in areas where ambient (outdoor) fine particulate matter concentrations exceed the World Health Organization’s Air Quality Guideline

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Most of the world’s population lives in areas where air quality is unhealthy. An estimated 95% of people live in areas where ambient (outdoor) fine particulate matter concentrations exceed the World Health Organization’s Air Quality Guideline