The Center develops analytical tools that facilitate better understanding and incorporation of sustainability principles.  These methodological procedures are based on benchmarked and peer-reviewed datasets establishing economic and environmental impacts, including greenhouse gases, criteria air pollutants, toxic releases, and employment.  Our tools provide an organized and hierarchical method to guide decision-making and can be tailored for many scales, from individual buildings to county, state, or national levels.  In addition, we use a combination of GIS, input/output analyses of the U.S. economy, and life cycle data to address the balance of air, water, energy, food, and materials.  Economic impact is demonstrated in the form of regional boundaries and the flow of currency between these boundaries.