Abstract: This item presents information about alternative sources of energy, using industrial control techniques, and the role of tress and oceans in keeping the air clean. Includes great graphics.
Abstract: To develop an understanding of modern industrial technologies that clean up and prevent air pollution, students build and observe a variety of simple models of engineering pollutant recovery methods: scrubber, electrostatic precipitator, cyclone and baghouse. In an associated literacy activity, students become more aware of global environmental problems and play a part in their solution by writing environmental action campaign letters.