City air pollution shortens our life
Exhaust Scientists have studied pollution and other factors such as health services and exercise.It has taken a quarter of a century, but US researchers say their work has finally enabled them to determine to what extent city air pollution impacts on average life expectancy. The project tracked the change of air quality in 51 American cities since the 1980's. During that time general life expectancy increased by more than two and half years, much due to improved lifestyles, diet and healthcare. But the researchers calculated more than 15% of that extra time was due to cleaner air. You do have a choice on whether you smoke, drink, exercise or what type of food you eat - but you do not have a choice on what air you breathe. Dr. Douglas Dockery, at the Harvard School of Public Health 'We think about five months of that is due to the improvement of air quality,' said Dr. Douglas Dockery, head of the Environmental Health Department at Harvard School of Public Healt...