Air pollution kills as many as the smogs of the 1950s, say scientists - Daily Mail 15th April 2008

Traffic fumes could be killing people at similar rates to the smogs of the 1950s, scientists claimed. In the 35 worst-affected areas there were 15,000 more pneumonia deaths over eight years than the national average. Lead researcher professor George Knox said he found an "exceptional" link between high rates of fatal pneumonia and exhaust fumes.

Link to Article