The study found that the risks of living in such heavily polluted areas did not approach those caused by a person smoking cigarettes.
However, it was comparable, said the researchers, with that faced by non-smokers exposed to second-hand smoke over an extended period.
There was also Gas cooking threat to lungs.
Or perhaps it's just that air is bad for you.
Pollen linked to heart and lung deaths
Need I mention that the BBC news' web site is nicely laid out?