One of the definitions of biodiversity, which has many definitions, is the differences between living things or the diversity of life forms in the world. According to another definition, biodiversity is a group of wholes formed by genes, species, ecosystems and ecological events in a region. The importance of biodiversity is gradually increasing…

Details the rationale, evaluation and implementation of use scenarios-structured narrative descriptions of envisioned system use-in the development of the Alexandria Digital Earth Prototype (ADEPT). Discusses the strengths of the scenario approach, obstacles to their use, and lessons learned in the overall development process. (Author/AEF)

Identifies themes necessary for geographical literacy: location, place, relationships within places, movement and interaction, and regions. Discusses three traditional social studies approaches to organizing geographic instruction: topical, social science, and reflective. Illustrates the richness and depth created by combining all three approaches…

Reprint of a presentation to the National Council of Geography Teachers in 1952 stating that a fundamental error in popular thought about geography is that the land masses of the continents are the basic divisions of the world. Analyzes the U.S. world position and claims the United States has a responsibility for the world's future. (NL)