Here’s an article from Time that shows how a recent study in America indicates a five month increase in lifespan when the cities we live in cut out the smog! The scientists believe that the dirt in the air is causing our lungs and us damage that physically shortens our lives, even though the dirt itself is tiny. That’s impressive scientific backup for what most of us have known or suspected. Interestingly the article also cites living with smokers, as opposed to being a smoker, as also potentially life shortening - as the dirt in tobacco smoke is not dissimilar to that in smog.