Green roofs may bring long-term energy savings

By: Kyle Potter Walking past the blank concrete walls of Williamson Hall, its hard to imagine the roof was once a maze of diverse plant life. After more than two years living atop a most unusual home, the array of grasses, bulbs and perennials has been removed as a long research project on green roofs is coming to a close. The roof is empty and drab at least for now. The question remains …