GREENBUILD -- US Green Building Council's CEO Rick Fedrizzi announced several pending changes to the LEED standard at this year's Greenbuild Conference and Expo. Fedrizzi announced that LEED, the Leadership in Energy and Environmental Design standards created by the USGBC, will encourage more builders to strive for LEED certification and to maintain higher standards after they are certified. Several other announcements were interspersed with presentations from organizations that partner or collaborate with USGBC to reduce the risk of climate change through green building. (podcast)