Sustainability means using resources in ways that can continue into the future. It focuses on energy, water, and materials. Sustainability is used in many systems.

Solar panels, recycling programs, and water-saving methods are examples of sustainable practices. Farms may use crop rotation, and cities may design buildings that use less energy. The United Nations promotes sustainability through the Sustainable Development Goals (SDGs).

Sustainability is applied in communities, industries, and governments. It is part of long-term planning for resource use and development.