Air pollution worse than smoking mother: study

Air pollution worse than smoking mother: study
http://www.thelocal.se/38930/20120205/

"Exhaust fumes and ground-level (tropospheric) ozone increase the risk for premature birth, according to a study by a team of researchers at Umeå University in northern Sweden.

The study, carried out in Stockholm - a city with comparatively low exhaust emissions - showed that ozone and fumes affect the foetus more than if the mother were a smoker."