"Energy policy Videocassettes." . . . . "Energy consumption Environmental aspects Videocassettes." . . "Power resources Videocassettes." . . . . "Power up? energy in our environment" . "Power up? energy in our environment"@en . "Shows how energy helps us to see, move, build, but also how it can pollute the earth."@en . "Discusses the use of fossil fuels, the greenhouse effect, global warming, conservation of energy, and the alternative sources of energy such as the wind, the sun, and water." . . . "Motion pictures"@en . . . . "Energy in our environment"@en . . "Juvenile works"@en . . . . . . . . . . . . . .