Waste management is how society handles what it throws away. It includes collection, transport, treatment, recycling, and disposal. Cities run fleets of trucks, operate landfills, and build recycling plants. Factories manage industrial waste. Hospitals handle medical waste separately. The system is vast and mostly invisible until it fails.

The hierarchy of waste management ranks options. Prevention is best. Avoid creating waste in the first place. Reuse comes next. Recycling follows. Recovery, like burning waste for energy, is lower. Landfill and incineration without energy recovery are the last resorts. Most countries still rely heavily on the bottom of the hierarchy.

The challenges are growing. Populations rise. Consumption increases. Waste volumes grow faster than recycling capacity. Plastic waste chokes oceans. Electronic waste contains toxic metals. Food waste generates methane in landfills. Solutions include better product design, extended producer responsibility, and public education. The transition to a circular economy is the long-term goal. Getting there requires policy, investment, and behavior change.

Common methods

• Recycling
• Composting
• Incineration with energy recovery
• Landfilling
• Anaerobic digestion