This document discusses different types of waste and recycling. It begins by explaining that municipal solid waste (MSW) makes up only 2% of total waste, while pre-consumer waste from manufacturing processes accounts for 20 times as much. It then defines key recycling terms like recycling, reusing, and reducing. The document also notes that not all materials are equal - things like aluminum and paper can be highly recycled, while plastics are more problematic. It emphasizes that reducing consumption is the most effective way to help the environment. The document concludes by discussing hazardous waste and how composting is a form of recycling organic materials.