Surprise! Michigan is ranked in the top 13 states for energy-efficient buildings and Detroit is the stand-out when it comes to larger construction. The list of organizations, foundations and educational institutions promoting a greener Mitten State seems to grow by the day. From Greenbuilt Michigan to Lawrence Technological University's Center for Sustainability, the region is tightening its green belt and looking healthier for it. Even auto giant Ford is getting in on the action, turning their sprawling Rouge Plant in Dearborn into a model of green building.