The Environmental Sustainability program is part of the Environmental Engineering and Sustainability cluster together with 1) theEnvironmental Engineering program and 2) the Nanoscale Interactions program. The goal of the Environmental Sustainability program is to promote sustainable engineered systems that support human well-being and that are also compatible with sustaining natural (environmental) systems. These systems provide ecological services vital for human survival. Research efforts supported by the program typically consider long time horizons and may incorporate contributions from the social sciences and ethics. The program supports engineering research that seeks to balance society's need to provide ecological protection and maintain stable economic conditions. There are four principal general research areas that are supported: Industrial ecology: Topics of interest include advancements in modeling such as life cycle assessment, materials flow analysis, input/output econ...