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Cities of Today, Cities of Tomorrow

Unit 5: What is Wrong with Cities?
Objectives Summary Text Activities


Pollution
Air pollution in urban areas mostly comes from the combustion of fossil fuels -- used in industry and for heating, electricity and cars. In many cities, the mix and concentration of air pollutants are already high enough to cause illness, especially to more susceptible individuals such as the elderly and the young.

Excessive levels of carbon monoxide, ozone and other particulates lead to increases in respiratory and cardiovascular diseases. Acute respiratory infections, tuberculosis and other airborne infections are a major source of death and ill-health in urban areas in the developing world. The highest incidence tends to be in the poorest, most-crowded areas. Overcrowding and poor ventilation can lead to multiple members of families being infected.

SEE ALSO HOUSING, HEALTH, AND SAFETY AND CRIME

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