ABSTRACT
The weakest link in our understanding of the environmental chain between emissions and effects lies in predicting the effects of exposures to each air pollutant. Dose response curves can vary depending on the mixture of pollutants, the length of exposure, the object exposed, the environmental conditions, and the types of effects. Existing research has only just begun to unravel the consequences of air pollution exposures. Animals are often more resistant to chronic than acute doses. Acute dose response curves may overestimate chronic effects. Exploring natural phenomena has the advantage, on the other hand, of observing relationships under relevant conditions, the conditions under which people actually live. The classification of consequences amongst aesthetic, material, and minor health damages is somewhat arbitrary. Sulfur products and particulates are also suspected of damaging fabrics, carbonate stone, and electrical equipment. The corrosion of paint by pollutants is documented by both laboratory and unplanned natural experiments.
