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)

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)

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)

Nonpoint source pollution, water pollution not released at one specific identifiable point, now accounts for 50 percent of the nation's water pollution problem. Runoff is the primary culprit and includes the following sources: agriculture, mining, hydrologic modifications, and urban runoff. Economics, legislation, practices, and management of this…

Maximum levels of the principle water contaminants are discussed in this article. Difficulties related to establishing standards for contaminants in drinking water are identified and the possible results of high levels of these contaminants included. (MA)

This article is the first of three articles in a series on the acid rain problem in recent years. Discussed are the causes of acid precipitation and its consequences for the abiotic and biotic components of the terrestrial and aquatic ecosystems, and for man-made materials. (Author/SA)

Citizen action to stop the disposal of taconite tailings into Lake Superior was unsuccessful when the courts settled in the favor of industry. Although citizen research revealed a form of asbestos, as well as other toxic chemicals in the discharged wastes, company representatives stated that there were no health hazards. (MA)

Reviews the pollution control history of the River Thames since the time of the Roman occupation. Particular emphasis is given to the restoration policies of the last thirty years. By 1950, the waters of the Thames were nearly devoid of wildlife. Today, the river is one of the world's cleanest. (MA)

Since the end of the second World War, the link between deepening poverty and environmental degradation has increased in visibility despite the efforts of the United Nations and other international agencies. Focuses on globalization, poverty, and the environment. (DDR)