Difference between revisions of "What is the current climate / environment state of city centers?"
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== Exposure to natural disasters == | |||
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== Air pollution == | |||
In many of todays modern cities, the main environmental health hazard to the population is exposure to air pollution. | |||
The three main air pollutants are:<br> | |||
1. Suspended Particles made up of soot, smoke, dust and liquid droplets.<br> | |||
2. Associated health hazard: particles and soot exposure over a long period of time is related to a wide range of chronic respiratory illness such as asthma and chronic obstructive pulmonary diseases as well as worsening heart conditions and other conditions.<br> | |||
3. Sulfur Dioxide produce by the combustion of fossil fuels, on the whole, motor vehicles and small and varied sources (such as boilers and stoves) contributing the most.<br> | |||
4. Associated health hazard: causes acid rain and can be extremely detrimental to the health of the young and elderly.<br> | |||
5. Nitrogen Dioxide caused by fuel combustion, aerobic decomposition and nitrogenous fertilizers.<br> | |||
Associated health hazard: causes acid rain and can damage lung tissue by forming into acid in the presence of water. | |||
Source: http://www.portfolio.mvm.ed.ac.uk/studentwebs/session4/27/citydiff.htm | |||
