Makes a case for stressing the beneficial aspects of gene propagation, and answers many questions about the potential hazards of this research. (MLH)

Rod-isolation techniques show that light-adapted human rods detect flicker frequencies as high as 28 hertz, and that the function relating rod critical flicker frequency to stimulus intensity contains two distinct branches. (MLH)

A comprehensive discussion of the biological activity in tidal pools is provided. The importance of environmental factors such as oxygen supply, temperature, salinity, and light is detailed. Plants and animals that might be found in a tidal pool are identified and described. (BT)

A comprehensive discussion of the free-living worms that inhabit the beaches and subtidal bottoms of the Cape Cod shoreline is presented. Methods for the location, collection, preservation, and identification of sea worms are identified. (BT)

Discusses the role of copper in biological systems and metabolism. (MLH)

Human mobility has radically increased the rate at which large numbers of living things are moving from one ecosystem to another. Discusses how ecosystems change when "exotic" species invade natural communities and notes efforts to control adverse effects. (LZ)

A survey has been carried out to investigate the provision of ethics teaching to students following Bioscience programmes at UK Universities. We report that 69% of undergraduate programmes described by respondents included an ethical component, although it may not be appropriate to extrapolate this value nationally. When ethics is taught, it is a…

Featuring an increased emphasis on the way today's changing science and technology is shaping our culture, this Second Edition of "Teaching Science in Elementary and Middle School" provides pre- and in-service teachers with an introduction to basic science concepts and methods of science instruction, as well as practical strategies for the…

Increasing the number of students who complete advanced degrees in science, technology, engineering, and mathematics (STEM) fields is a compelling national interest. Although college science and engineering degree completion rates have improved considerably over the past few decades, significant gaps persist among women and students of color. Gaps…

The Colorado Model Content Standards for Science specify what all students should know and be able to do in science as a result of their school studies. Specific expectations are given for students completing grades K-2, 3-5, 6-8, and 9-12. Five standards outline the essential level of science knowledge and skills needed by Colorado citizens to…

In this article, the authors present a laboratory exercise in data collection and statistical analysis in biological space using clustered stomates on leaves of "Begonia" plants. The exercise can be done in middle school classes by students making their own slides and seeing imprints of cells, or at the high school level through collecting data of…

This paper aims to examine the nature of the new elementary school curriculum in Turkey. In particular, the authors provide a coherent picture of the fundamentals, basic elements and the classroom implications of the new curriculum development initiative in five content areas: mathematics, science, social science, life science, and Turkish. This…

In this article the authors resort to a qualitative analysis of the plot of science fiction stories about a group of scientists, written by two 11th-grade Earth and Life Science students (aged 17), and to semi-structured interviews, with the double purpose of diagnosing their conceptions of the nature of science (namely, as regards scientists'…

The absence of a central database and use of specialized language hinder nonexperts in becoming familiar with the science teaching and learning literature and using it to inform their work. The challenge of locating articles related to a specific question or problem, coupled with the difficulty of comprehending findings based on a variety of…

Research shows that many students hold misconceptions related to plant functions (Hershey 2004). Some of these students will become teachers with little content understanding to identify their students' misconceptions about plants (Amir and Tamir 1994). The literature on teaching about plants doesn't help; it contains frequent errors,…