Poor urban dwellers have to deal with high levels of pollutants, toxicity and traffic-related injuries.
It's not just the capital's cyclists who are being exposed to dangerously high levels of pollutants; Leeds and Birmingham have also been identified as high-risk cities.
A number of international studies have indicated risks to children whose mothers are exposed to high levels of pollutants at pregnancy, include low birth weight and long-term impacts on intelligence.
High levels of pollutants such as mercury and P.C.B.s have been detected in tissue samples taken from wild olms, whose populations are retreating deeper underground as their habitat continues to be compromised.
We already have higher levels of pollutants along the coastline and so the ability of the corals to bounce back is highly compromised.
Although diesels provide better fuel economy than gasoline engines, they do not run as smoothly as the latter and emit higher levels of pollutants.
In addition, professors at the University of Delaware say they have found high levels of pollutants like mercury, PCB's and pesticides in shallow areas of the river that can contaminate the water if dredging is undertaken, and that the contaminants can pose problems for disposal of the sludge.
