The document discusses key green building megatrends for 2012. It identifies that growth in green building is expected to rebound in the US while continuing to expand globally. Federal momentum for green building initiatives in the US has slowed, shifting focus to more activity at the state and local levels. The use of the LEED-EBOM rating system surpassed LEED-NC in certified building area, with non-US growth outpacing domestic growth. Issues around water conservation and zero-net energy buildings are also gaining importance globally. Performance disclosure policies and carbon rating systems are spreading internationally.