Results from the analysis of land and marine records from the past century are presented. It is indicated that the planet earth has warmed about one-half of a degree celsius. The uncertainty of these measurements and future warming trends are discussed. (CW)

Presented are the procedures and a discussion of the results for an experiment in which students select unknown carboxylic acids, determine their melting points, and investigate their solubility behavior in water and ethanol. A table of selected carboxylic acids is included. (CW)

Cited are the experiences of the authors with a college-level course which used science fiction films to teach scientific principles. Included is a set of sample scientific concepts explored using the film "Forbidden Planet." (CW)

Described are some of the considerations necessary in planning a field studies course in the tropics. Discussed are site selection; planning and preparation; course structure; the advantages of travel courses; and recommendations concerning liability, multiple instructors, hotels, sailboats, and tours. A list of 26 references is included. (CW)

Presented are arguments for the use of a case study approach for the teaching of human heredity. The design of case studies and related exercises is discussed. Five examples are given. A list of eight resources for case study samples is included. (CW)

Considered is an experiment used to investigate one-dimensional, nonuniform acceleration. Presented is the correct expression for the acceleration, generalized to include friction and describe simulations supporting student data. The feasibility of the experiment is questioned. (CW)

A model of the phenomenon of the desert mirage is presented using Snell's Law and simple programing techniques. Optical trajectories predicted by the model are illustrated. (CW)

Presented is a course that applies concepts from sociology, anthropology, linguistics, and social studies of science to the question of expert status. Included are major concepts to be covered, suggested readings and annotated bibliography, and possible class exercises. (KR)

Described is a project involving the introduction of microcomputers into the laboratory portion of a college general physics course for data collection and analysis. The results of an evaluation of this program are presented. (CW)

Reviewed are two computer software packages: "Introduction to Spectroscopy, IR, NMR & CMR," and "ASYSTANT" (a mathematical and statistical analysis software tool). Discussed are the functions, strengths, weaknesses, hardware requirements, components, level, and cost for each package. (CW)

Discussed is the record of the National Science Foundation during the period when Erich Bloch was director, from 1984 through 1990. Funding growth and trends during this period are highlighted. (CW)

Applications of the Landsat Thematic Mapper in the fields of pedology, geology, and geomorphology are described. The history of the Landsat program and Landsat products are discussed. Illustrations of different Landsat views are presented. (CW)

The purpose of this study was to develop a conceptual framework concerning writings about the future of biology education. Methods, procedures, and results are presented. A list of 112 articles about the future found in the journal "The American Biology Teacher" from 1938-88 is included. (CW)

Illustrated is the usefulness of keeping track of the directions of atomic orbitals in predicting the shapes of molecules. The application of this technique to all cumulenes and its use in the determination of aromaticity in cyclic systems is discussed. (KR)

Described is a symposium of Nobel laureates held in the summer of 1990 to discuss cosmology. Different views on the structure and evolution of the universe are presented. Evidence for different theories of cosmology is discussed. (CW)