Describes three experiments which investigated the behavior of "Colisa fasciata" males in full breeding condition subjected to competition for nest sites and a single female. Concludes that for these fish territorial dominance is established in a relatively short time, the period varying with the intensity of competition. (MLH)

Presents a review of important science articles of 1974 as reported in the pages of "Science News." References are given relating to the volume and page number in which the main article appeared. Life-sciences, physical sciences, earth science, environmental science, humanities and technology research are reviewed. (EB)

Describes how to construct a model of a DNA molecule with inexpensive materials. (BR)

Black college students (N=55) enrolled in the College of Agriculture and Life Sciences (AGLS) at the University of Maryland in the spring semester of 1987 participated in individual interviews with their college's advisors. The interviews were diagnostic and prescriptive in nature, designed to help students identify problems getting in the way of…

This report, the second of a three-part study of Soviet space programs, examines their manned space programs and reviews their quest for a permanently manned presence in space. Also included is information concerning the physiological and psychological findings related to the extended duration of Soviet manned flights and an executive summary.…

A number of activities are described by which a class can collect biological data about the students in the class. Brief instructions are given. (RH)

The development of the Estuarine Resource Technician (ERT) Program, its curriculum, student recruitment, placement, faculty and facilities, problems and potential applications are described. (MW)

Examines the present and future roles of the American Institute of Biological Sciences (AIBS) and seeks to acquaint the membership with actions that have been taken by the AIBS for their benefit. (JR)

Presents a mechanical analog designed to reduce the conceptual difficulties experienced by many students in thinking about age distribution concepts in demography. (JR)

Presents a re-evaluation of the level of unemployment among bioscientists from a new analysis of the data collected in the 1973 manpower survey conducted by the American Institute of Biological Sciences. (JR)

Describes a program of the American Institute of Biological Sciences that is concerned with the identification and preservation of research natural areas. (JR)

Part two of a two-part article gives details of the threat of off-road vehicles to the terrain and wildlife of desert areas and to cultural values. (JR)