Greenwire: The National Association of Governors is the latest legislative group to support the American Institute of Architects’ goal of zeroing out new and renovated buildings’ greenhouse gas emissions by 2030. The NGA — which is convening in Biloxi, Miss., for its annual meeting — endorsed the AIA goal as part of a resolution on energy efficiency and conservation. The U.S. Conference of Mayors and the National Association of Counties have also endorsed the AIA goal by vowing to integrate …