@zoowar Even smoking and traffic kill more. Pollution has also many invisible faces. E.g. endocrine disrupting chemicals in everyday items made from petro-chemicals. As for air pollution, there is a well documented link to diabetes 2. We are learning or failing on the hard way that most conditions are not the fate as we usually experience them. They are result of a polluted unhealthy environment. That's known for decades or even through history but those wo extract money have won above all precautions. Essence from a EU paper about the precautionary principle: As huge as the profits of the polluters are, the damage they cause is manyfold bigger. (Old but still exiting to read "Late lessons from early warnings: the precautionary principle 1896-2000": https://www.eea.europa.eu/publications/environmental_issue_report_2001_22 )