Discusses the Toxic Substances Control Act, including a suggested toxic chemical categorization scheme to aid the EPA. (MDR)

The environmental toxicology of mercury is discussed. Sources, effects, levels, and standards of mercury in the air are given. (BB)

The Environmental Protection Agency chose the American Society of Testing and Materials to develop standardized guidelines for pesticide registration. Since the numbers and uses of pesticides is so wide, establishing ecological and public health guidelines may be difficult. Strong industry and government representation might also hamper the…

Explores problems and doubts regarding the extent to which air pollution must be reduced to eliminate further suffering and death. The adequacy of our present approach to air pollution control is evaluated together with an assessment of unknown factors affecting standards for a healthful environment. (BL)

A more aware public will be required to achieve the national goal of clean water. Effort must be made to provide better and more rapid coverage of government action and news events. (BT)

Children are especially sensitive to air pollution and consequences to them maybe of longer duration than to adults. The effects of low-level pollution on children are the concern of this article. The need for research on the threat of air pollution to childrens' health is emphasized. (BT)

Assesses the scope of technological hazard burden in the United States. Discusses the technological impacts on ecosystems and reviews technological hazards in an historical perspective. (MA)

Examines models for hazard management and the constraints associated with them. Suggests ways of improving hazard management. (MA)

Discusses air and water pollution problems resulting from sulfur in the environment. (MDR)

PCB's are one of the most persistent chemicals ever introduced into the environment by man. From very early in their history of manufacture PCB's were suspected of being hazardous to health, but public awareness of the hazard was slow in coming. (RE)

The citrus thrips is a small insect pest that causes some cosmetic damage, but seldom causes yield reduction, tree kills, or lower the nutritional value or eating quality of citrus fruits. In California however, economic and marketing factors have prompted the massive, unnecessary overuse of insecticides to kill this pest. (Author/MA)

Described are the patterns of air pollution in certain large urban areas. Persons in poverty, in occupations below the management or professional level, in low-rent districts, and in black population are most heavily exposed to air pollution. Pollution paradoxically is largely produced by high energy consuming middle-and upper-class households.…

This article identifies the cumulative effects of some environmental problems facing mankind and presents possible alternative futures. The author discusses the pervasive infiltration and detrimental effects in the biosphere of polychlorinated biphenyls, the recent increase in acid rain, the loss of tropical rain forest lands, and future energy…

A review of the environmental problems identified on Earth Day 1970 is presented. Problems on conspicuous consumption, combustion of fossil fuels, and toxic substances are discussed. (SMB)