The Atlanta BeltLine is one of the most important urban renewal projects of the 21st century. In this case study, read about the ambitions, successes, and struggles of this project, now in its 12th year. Serve-Learn-Sustain interprets sustainable communities as integrated systems, wherein environmental, economic, and social factors all inform each other. As you read this case study, consider these terms as discrete factors, but also as connected. This tool was contributed by Dr. Bethany Jacobs.