The Environmental Sustainability program is part of the Environmental Engineering and Sustainability cluster, which includes also 1) Environmental Engineering; and 2) Biological and Environmental Interactions of Nanoscale Materials. 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. 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; Green Engineering; Ecological Engineering; and Earth Systems Engineering. Innovative proposals outside the scope of the four core areas mentioned above may be considered. The typical award size for the program is around $100,000 per year.