Describes a method for identification of gold samples using a laser to vaporize a small sample of the gold. (MKR)

Analyzes the relationship between Karl Popper's philosophy and a 1912 paper by F. G. Hopkins which was instrumental in convincing scientists about merits of the vitamin theory. Concludes that Hopkins' work was convincing because it subjected a theory (which was the center of attention) to the severest possible tests, supporting Popper's position.…

Discusses trends that have converged to transform our understanding of genetic and environmental influences on personality traits. Presents five main determinants of personality. (ZWH)

Describes the Monarch Watch program that tracks the migration of the monarch butterfly. Presents activities that introduce students to research and international collaboration between students and researchers. Familiarizes students with monarchs, stimulates their interest, and helps them generate questions that can lead to good research projects.…

This guide has been developed through a collaborative effort involving the U.S. Environmental Protection Agency (EPA), the National Oceanic and Atmospheric Administration (NOAA), and the National Aeronautics and Space Administration (NASA). It is part of an ongoing commitment to ensure that the results of scientific research on ozone depletion are…

Discusses the findings of a study that involves the testing of the pharmaceutical Ampakines on laboratory rats. Rats administered Ampakines learn remarkably quickly to navigate new mazes. The question now is does the drug make the rats alert or memory enhanced. Implications for treatment in humans is discussed. (ZWH)

Discusses highlights in the development of genetic engineering, examining techniques with recombinant DNA, legal and ethical issues, GenBank (a national database of nucleic acid sequences), and other topics. (JN)

Describes the theory and application of an atomic fountain which pushes the atoms by laser pulses. Discusses the applications in measuring atomic properties and in building an atomic clock. (YP)

Knapping is a toolmaking technique used by early humans and replicated by research archaeologists. Describes knapping techniques and provides examples of how they are presently being used in North America. (MDH)

Reviews the Science Talent Search scholarship program which rewards scientific research efforts of secondary students. Also includes a description of this year's ten top winners and their projects. (SL)

Recommends that an ethical approach to animal research must start early, pointing out that teachers have the opportunity and responsibility to represent the research community and to communicate the benefits of animal research to students. A list of alternatives to using animals for medical research/experiments is included. (JN)

A study conducted by high school advanced bacteriology students appears to confirm the hypothesis that the incremental administration of antibiotics on several species of bacteria (Escherichia coli, Staphylococcus epidermis, Bacillus sublitus, Bacillus megaterium) will allow for the development of antibiotic-resistant strains. (PEB)

The author describes relationships between the fungi called mycorrhizae and plants. Describes the classes of mycorrhizae and the importance of such fungi in plant growth. Presents clear micrographs of the fungi and their interactions with plant root cells. Provides technological applications of mycorrhizae in agriculture and discusses problems…

Advice on how to transform a practical idea into a first-class science fair project is provided. How to do scientific research, what to include in a science fair report, how to pick a topic, when to begin, writing the report, and making the display are topics of discussion. (KR)

Describes a technique by which the density and hunting habits of owls can be inferred from their pellets. Owl pellets--usually small, cylindrical packages of undigested bone, hair, etc.--are regurgitated by a roosting bird. A series of activities based on owl pellets are provided. (CP)