Recycling involves processing used materials like glass, paper, metal, plastic, and textiles into new products in order to reduce waste, decrease consumption of raw materials, lower energy usage and greenhouse gas emissions, and cut down on air and water pollution. Paper recycling recovers waste paper to make new paper products from mill broke, pre-consumer waste, or post-consumer waste. Metal recycling reuses old metal like aluminum and steel to manufacture new items using 95% less energy than creating products from raw materials. Plastic recycling recovers scrap or waste plastics and transforms them, sometimes completely changing their form, into useful products like plastic chairs made from recycled soft drink bottles.