A green building is a structure designed and constructed with a focus on sustainability and minimizing environmental impact. It incorporates energy-efficient systems, sustainable materials, and water conservation practices. Green buildings aim to reduce emissions, promote health, and ensure efficient resource use throughout their life cycle, from construction to demolition. Certifications, such as LEED (Leadership in Energy and Environmental Design), assess environmental performance and ensure compliance with sustainability standards, contributing to the overall goal of reducing the ecological footprint of the built environment.