Describes activities abroad Liberty Chesapeake,'' a 133-foot-long retired lightship moored off the East Potomac Park, Washington, D.C., and used as a public excursion boat and floating laboratory by the U.S. National Park Service. (DS)

Data from the Third Annual Report of the United States Council of Environmental Quality are used in an editorial advocating the use of some of the money committed to cleaning air and water to create a more adequate knowledge base for action. (AL)

Discusses the role of controlled burning, as was practiced by the American Indians, as a technique in land and water resource management. (MB)

Presents controversy over damming of Wyoming's Upper Green River to supply water to the arid basins of eastern Wyoming. Possibilities of wildlife destruction, flooding of valley lands, and opposition to the construction of the Kendall Dam itself are enumerated together with legislative action to date. (BL)

The possible utilization of geothermal energy as a solution to the energy crisis is discussed. (CP)

Proposed are various indexes of pollution which attempt to determine priorities in removing environmental stresses. (CP)

Considers reasons for water, air, and land pollution in the Soviet Union, incentives to pollute under socialism and the advantages socialism has for environmental management. Concludes that industrialization, not private enterprise, causes environmental disruption, and that strongly centralized planned economics do not necessarily avoid…

The shortage of trained manpower remains a troublesome problem that must be overcome if the national attack on water pollution succeeds. The total number of persons treating waste water in 1967 was 11,300 professionals, 10,300 technicians, 23,500 sewage treatment plant operators, and 50,000 maintenance workers. (BC)

This paper was presented at the annual meeting of the American School Health Association, Dental Health Section, University of Alberta, Edmonton, Alberta, Canada, November 10, 1968.

Frequent spring showers provide many opportunities for rainy-day walks and playground activities. Examples of indoor and outdoor water-related activities are provided. Children could study ripples outdoors by dropping objects in puddles. Rain water could be collected in containers of various shapes and studied indoors, introducing students to…

The Grand Canyon, the natural wonder visited most often in the United States, is explored on foot, on burro, and by boat in this article. Learn about the canyon's different rock layers as well as its erosion, plant life, animal life, and water flow. (JM)