Consists of a survey, department by department, of the jobs for biologists at the National Museum of Natural History. (BB)

Explains the mechanisms and describes the processes that underlie gravitropism in roots. Reviews experimental efforts and investigative results that explored the causes of root behavior. (ML)

Points out that snails are interesting and easily-managed classroom animals. One advantage of this animal is that it requires no special attention over weekends or holidays. Background information, anatomy, reproduction, and feeding are discussed, along with suggestions for housing aquatic and/or land snails. (DH)

Provides exploration into types of numeric databases available (also known as source databases, nonbibliographic databases, data-files, data-banks, fact banks); examines differences and similarities between bibliographic and numeric databases; identifies disciplines that utilize numeric databases; and surveys representative examples in the…

This report is intended as an information resource for teachers, scientists, and others involved in developing science curricula, science literacy materials for the public, or related information addressing issues of science education reform. The following sections are included: (1) Introduction; (2) The Big (Numbers) Picture: Selected Data; (3)…

This environmental education strategy was developed by a Bureau of Land Management (BLM) Washington Office Task Group in collaboration with staff at all levels of the BLM. The strategy calls for the BLM to expand its efforts in educating citizens about ecosystems and ecosystem management, and to establish environmental education as an integral…

Discusses the importance of the electron microscope, and in particular the scanning electron microscope, in studying the surface topography, sectional substructures, and patterns of development of pollen grains. The production, dispersal methods, and structure of pollen grains are described and illustrated with numerous electron micrographs. (JR)

Describes the continuing efforts of environmentalists to eliminate the use of chlorinated hydrocarbons as pesticides, and in particular discusses the opposing positions taken by the Environmental Defense Fund and the Shell Chemical Company on the use of aldrin and dieldrin. (JR)

Discusses the interaction of the various factors involved in the normal functioning of the mucociliary system of the human respiratory tract. The mucociliary system constitutes a major mammalian defense against dangerous inhaled particles by acting to collect, transport, and eventually eliminate such materials from the tracheobronchial tree. (JR)

Discusses the nature of the immune response and traces many of the discoveries that have led to the present state of knowledge in immunology. The new cellular immunology is directing its efforts toward improving health by proper manipulation of the immune mechanisms of the body. (JR)

Discusses some of the bioethical and legal questions related to in vitro fertilization of human eggs as a means of alleviating the suffering of infertile couples. (JR)

Presents an experimental design to investigate the role of the cognitive information processing component and various levels of information density or information processing output. Both the information treatment and analytic ability had significant effects on the information-processing output. (DF)

Forensic science is an approach to study desirability of specific technologies in the context of value objectives and biological imperatives of society. Such groups should be formed with people from various physical and social sciences. (PS)

A discussion of Harvey's discovery of the circulation of blood illustrates that the contribution of the history of science can be logical as well as chronological. (DF)