BEYOND TECHNOLOGY: NEW PERSPECTIVES ON POLLUTION CONTROL.

There are various types of pollution that must be controlled. (1) Direct assaults on human health (for example, lead poisoning or aggravation of lung disease by air pollution). (2) Damage to goods and services that society provides for itself (e. g. , the corrosive effects of air pollution on buildings and crops). (3) Other direct effects on what people perceive as their 'quality of life' (e. g. , congestion and litter). (4) Indirect effects on society through interference with services that are provided for society by natural ecosystems such as ocean fish production and control of erosion by vegetation. Examples of such indirect efforts are destruction of vegetation by over-grazing and logging, and poisoning of coastal waters with oil and heavy metals.