Discusses alien species on the west coast, efforts to combat invasions, methods of transport, and educational projects developed to aid prevention efforts. Includes a list of marine invaders in the Pacific Northwest, plus threats from California and the Great Lakes. (PVD)

Summarizes what is known about two major variables involved in certain types of chemical pollution that seem to be changing the structure of the Earth's atmosphere. Discusses the greenhouse effect and the ozone layer. (TW)

Since only a few of the original landforms, streams, natural ecosystems, wild plants or animals still exist in our cities and suburbs, schools can help to fill this void by creating diverse learning environments around school buildings. Among the suggestions are a wet area, tall or short grass prairies, a boulder field, vegetable garden plots,…

Identifies metaphor as a powerful tool when utilized to facilitate concept formation pertaining to global ecological systems and universal concerns. Provides an illustration of how an instructional metaphor, spaceship earth, can be used in the classroom to help students create new meanings for abstract and complex ideas. (MCO)

Discusses the causes, sources, and problems associated with acid deposition in the Pacific Northwest. Includes a learning activity about acid rain, "Deadly Skies," which was adapted from the Project WILD Aquatic Supplement. (TW)

Describes a project in the Bellingham Cooperative School (Washington) in which teachers and students, along with parents and community volunteers, are involved in a 24-acre wildlife enhancement effort. (TW)