New information reveals that dinosaurs have a pelvic structure similar to that of animals that walk upright. Science teachers should remember that theories and assumptions are always provisional and tentative. (JN)

The last two decades of collecting evidence to support the plate tectonic theory is reviewed. Discussion also involves how other terrestrial plants show evidence of once having been hot but with long-term stability and no continuing convection. (Author/SA)

Presented is a discussion of recent evidence on the evolution of human forms on earth gathered and evaluated using mitochondrial DNA techniques. Theories regarding the possibility that a common female ancestor existed in Africa about 200,000 years ago are discussed. A list of teaching aids is provided. (CW)

Critically reviews creationist ideas on the geology of the Grand Canyon, especially those found in "Grand Canyon: Monument to Catastrophe." Contains 27 references. (WRM)

The question of human origin has always been disputed by evolution theorists. This book provides a comprehensive survey of the debates over human evolution from the time of Darwin to the 1940s. Part 1 discusses the early controversies, noting that they focused on philosophical issues rather than causes or details of the evolutionary process. A…

This paper describes the lives and contributions of George Peabody and his nephew Othniel Charles Marsh. Marsh influenced his uncle's gifts to science and science education, particularly in the founding of the Peabody Museum of Archaeology and Ethnology at Harvard, the Peabody Museum of Natural History at Yale, and the Peabody Academy of Science,…