A green museum is a museum that incorporates concepts of sustainability into its operations, programming, and facility. Many green museums, but not all, use their collections to produce exhibitions, events, classes, and other programming to educate the public about the natural environment. Many, but not all, green museums reside in a building featuring sustainable architecture and technology. Green museums interpret their own sustainable practices and green design to present a model of behavior.
Green museums strive to help people become more conscious of their world, its limitations, and how their actions affect it. The goal is to create positive change by encouraging people to make sustainable choices in their daily lives. They use their position as community-centered institutions to create a culture of sustainability.
Museums make a "unique contribution to the public by collecting, preserving, and interpreting the things of this world," according to the American Alliance of Museums’ Code of Ethics. There are many types of museums that specialize in various fields, including anthropology, art, history, natural history, science, and can have living collections such as public aquariums, botanical gardens, nature centers, and zoos, or no collections like planetariums, and children's museums.
Museums are stewards of natural heritage and cultural heritage by preserving objects of importance to mankind on the community and global level. Museums communicate and contribute to knowledge. They are mission-driven, serve the public, and usually have nonprofit legal status.