Leadership in Energy and Environmental Design® (LEED) is a rating system that is recognized as the international mark of excellence for green building in over 160 countries. LEED v4 is the framework and benchmark for the next generation of green buildings. Its development spanned more than three years, and engaged hundreds of volunteers and thousands of stakeholders around the world. LEED v4 is driving big reductions in GHG emissions associated with building construction and operation, and putting a stronger emphasis on human health. (source: cagbc.org/leedv4)