"Organized into six chapters, this film offers information about the most powerful geological forces on Earth. The first chapter provides an overview of and an introduction to glaciers. "Glaciers Past and Present" highlights the waxing and waning of ice sheets during the last 1.8 million years. "Glacier Dynamics" discusses the process of compressed snow and explains the formation and movement of glaciers. Mountain glacier and continental glacier formations are covered in chapters 4 and 5, explaining land formations, postglacial features, and more. The final segment discusses the correlations between glaciers and climate change, emphasizing the need to understand the dynamics of glacier growth and wasting which is one of the greatest scientific challenges for present scientists. The program incorporates excellent demonstrations, simple diagrams, photographs, and a clear audio track. Glacial features such as cirques, hanging valleys, fjords, eskers, kettle lakes, and drumlins are explained in detail. Interviews with experts in the field of glacier studies validate much of the information. The DVD includes supplementary materials such as an image gallery of 15 slides, a teacher's guide, and a quiz. The program aligns with National Science Education Standards, among others. A very useful addition for middle, high school, and college libraries."