Recycling is a way to conserve natural resources by salvaging metals, paper, plastic, glass, and other materials used in packaging and industry, and turning them into new and usable products. Successful recycling involves a three-step process: collecting the material; processing it, which can include sorting, compacting, and transporting it to the buyer; and finally, remanufacturing the material into new items. One of recycling's many benefits is its conservation of energy and resources; its popularity is increasing with public awareness of environmental issues. Also, as disposal costs grow and landfill space shrinks, recycling becomes a way to recover materials from these landfills, decreasing the amount of new raw materials used, and reserving land for purposes other than dumping. The energy-saving benefits of recycling were first recognized by the glass and aluminum industries, which require tremendous amounts of energy to produce containers from raw materials. There, it was discovered that...