Green roofs, lush vegetation, natural materials, earthy tones, organic shapes, open floor plans, large windows, sliding glass doors, clerestory windows, skylights, solar tubes, breathable walls, insulation systems, air filtration systems, wind catchers, solar chimneys, cross ventilation, stack effect, cooling towers, shading devices, overhangs, louvers, natural convection, soft diffused lighting, warm earthy colors, serene ambiance.