Green building aims to reduce environmental impact through sustainable and efficient practices across a building's entire lifecycle. It focuses on siting, design, construction, operation, and deconstruction to optimize energy efficiency, water efficiency, materials efficiency, and waste reduction/management. Specifically, it emphasizes the use of high-performance windows and insulation, effective window placement, onsite renewable energy, low-flow fixtures, rapidly renewable and recyclable materials, and converting waste into resources like fertilizer.