Air pollution as bad for emphysema as smoking

Long-term exposure to outdoor air pollutants accelerates the development of emphysema and age-related decline in lung function, new research shows.  The 18-year study involving 5780 adults across several centres in the US found a statistically significant association between baseline ambient concentrations of ambient ozone (O3; 0.13 per 3 parts per billion), fine particulate matter (PM2.5; ...