Green building, also called sustainable building, is a way of creating structures using processes that are resource-efficient and environmentally responsible throughout the life cycle of the building - from construction to demolition. The goal of green building is to minimize environmental impact and protect human health. This can be accomplished with energy efficiency, use of renewable energy, water efficiency, waste reduction, avoiding toxic products, using recycled and sustainable products, and smart growth. Green building also contributes to a healthy indoor environment by using products that emit minimal pollutants.