As today's Wall Street Journal noted,
The finding, published online Wednesday in the British Medical Journal Open, adds to growing evidence suggesting that pollution is tied to premature birth and other health risks for pregnant women and babies.
Here is a link to the report: http://bit.ly/WR6lwG
Readers, obviously, should be cautious about concluding too much from one study.
However, this new report is another argument why the US EPA should move forward expeditiously with the so-called "Tier 3" plan for smog-fighting cleaner gasoline and motor vehicles.