Waste management involves the collection, transport, processing, recycling or disposal of waste materials in order to reduce health and environmental impacts and recover resources. Common waste disposal methods include landfilling, where waste is buried, and recycling, which refers to the collection and reuse of materials like containers. Education and awareness about waste management is important from a global resource perspective. Waste management deals with solid, liquid, gaseous or radioactive substances and requires different methods and expertise for each.