From the early days of concrete masonry, right up to the present, those who understood the energy efficiency, durability, and natural aesthetics of concrete masonry have realized that it doesn't take special efforts to make concrete masonry environmentally friendly…it is a natural building material with unparalleled environmental qualities. And concrete masonry has the flexibility to be adapted to specific needs.  Concrete masonry producers are eager to demonstrate how these qualities can contribute to practical designs, enduring structures and environmental responsibility. Sustainability is about building the quality of life for now and future generations. This concept includes improving occupant well-being, mitigating environmental impacts, and providing reasonable economic returns on investment. Using green building practices can result in energy and cost savings over the life of the structure. Occupants of green buildings enjoy improved indoor air quality and day-lit spaces, improved health, comfort and productivity.