We now know that clean air prolongs life expectancy. A study
published in Atmospheric Chemistry and Physics
magazine showed that the inhabitants of Stockholm, Göteborg and Malmö live a year longer than 25 years ago due to the fact that they now breathe air of a much higher quality
The researchers from Stockholm University’s Department of Environmental Science and Chemistry used the results of the monitoring stations located in each of the three cities to measure nitrogen oxides, ozone and particulates in the atmosphere between 1990 and 2015. In the case of nitrogen oxides, which are mainly generated by internal combustion engines, concentrations dropped noticeably in all three cities, and life expectancy rose by around 4-5 years in the 25-year window examined in the study.