The Aldo Leopold Foundation Headquarters, located in Wisconsin, has been certified as the the first ever, fully LEED-platinum certified, carbon neutral building in the world, making it the greenest building ever built. LEED stands for Leadership in Energy and Environmental Design (LEED), and it is the green building rating system, providing a suite of standards for environmentally sustainable construction. A rating of LEED-platinum means the building received 80% of the available points. “This building produces 15% more energy than what it consumes by using 198-panel 39.6 kilowatt solar electric system, the second largest in Wisconsin. To save on energy costs, heating and cooling will be done via a radiant system installed within the concrete floors. Proper insulation of the building, use of geothermal energy, good passive design to allow for daylighting and heating during winter and shading during summer, cross ventilation, and operable windows all contribute towards achieving this remarkable goal.” This building is remarkable, setting a new standard for green building, and hopefully it will encourage new construction to take this form and strive to be even more “green.”