Discusses how genetic data on present human population relationships and data from the Pleistocene fossil hominid record are being used to compare two contrasting models for the origin of modern humans. (TW)

Reviews new documentation of the extent, timing, origins, dispersal mechanisms, and impacts of biological invasions in the Great Lakes basin. (ZWH)

Discusses studies by Donald LaSalle showing that students' performance can vary widely over the day according to the workings of their individual biological clocks. Presents exercises to help children identify their own "body rhythm prime time" and suggests rescheduling instruction to accommodate these differences. Condensed from…

Lists eight entries in the ERIC database that concern Christopher Columbus and the effects of his voyages on world history. Includes works on curriculum development, biological effects of the contact, and a bibliography of books for children. Explains how to find and obtain the materials. (DK)

This book provides the basic knowledge and guides for the construction and operation of a small-scale, family-size biogas unit. The first chapter discusses the benefits of biogas production and the Chinese biogas model. The second chapter shows the components, design formulas, and sizing units of the biogas model. Chapter 3 describes actual…

This paper reviews the evidence for various biological mechanisms in autism and discusses implications of these mechanisms for treatment. A brief introductory discussion examines the history of research on autism. Then the literature is reviewed and treatment implications are drawn for the following biological mechanisms: genetic disorders;…

This brief paper addresses the referral of students for psychoeducational evaluation of problems with attention control and overactivity, and provides a checklist to assist teachers in the determination of possible hypotheses to consider prior to formal referral. The paper and checklist emphasize the variety of possible causes of attentional and…

Discussed is the nature of cyanide poisoning. Included are sources of the cyanide ion, the mechanism of poisoning, the biochemical basis for treatment, and therapeutic measures. (BT)

Many believe that life on Earth is part of a unified system. This article reviews the Gaia hypothesis and reviews the status of the Earth's ecology. Stressed is the impact of human activity on the ecosphere including acid rain, the greenhouse effect and other examples of climate change. (CW)

States that teaching the concepts of evolution to secondary school and college students is difficult. Presents a playing card game-based simulation that teaches the complex idea of natural selection in a simple, nonthreatening way. Includes three figures, one table, and step-by-step instructional procedures. (CFR)

Biological differences alone did not account for differences in self-conception of interpersonal abilities found between 197 adolescents with hearing disabilities and 53 nondisabled adolescents, nor did they account for differences between subgroups of those with hearing disabilities. Cognitive, emotional, motivational, and social factors also…

Examines biological and environmental determinants of creative/divergent thinking in light of two studies--one showing an inverse relationship between serum uric acid and divergent thinking and one showing a positive correlation between family size and creativity in upper socioeconomic status groups. Outlines classroom practices that promote…

This booklet identifies factors that may interfere with literacy development in young children and discusses the early intervention services that may prevent reading difficulties. It begins by emphasizing the importance of early identification of children with literacy needs. Child-, family-, and school-based factors that may indicate a child is…

The article reviews a variety of biophysical variables which contribute to autism or autistic symptoms, and discusses the nature and manifestations of these psychobiological variables in terms of the need for individual yet comprehensive educational interventions and family support services. (DLS)

Units of study to help secondary students learn about the aging process are provided. There are five units. Major concepts taught in the first unit, "Chronological Aging," are that aging is a continual process, that generational cycles ensure survival, and that species depend on each other for survival. In the second unit, students learn…