The Palazzo Las Vegas, a Las Vegas Sands property, informed that the US Green Building Council (USGBC) made its "green" status official with the presentation of a Silver LEED Certificate (Leadership in Energy and Environmental Design) at an award ceremony recently held. Nevada Governor Jim Gibbons and David E. Rodgers, Deputy Assistant Secretary for Energy Efficiency at the U.S. Department of Energy were also on-hand to honor this impressive accomplishment.