The Environmental Sciences Initiative of the CUNY-ASRC enables multi-disciplinary research focused on addressing key environmental research questions of the twenty-first century. Among these include the need to manage energy, carbon, and nutrients in ways that reduce waste and enhance recycling; protect humans from the impacts of pollution; co-design the built environment with both engineering and green principles in mind; protect unique biodiversity assets and the valuable ecosystem services they provide; and refurbish and make more efficient our built and natural infrastructure assets. The Director (Charles Vörösmarty) and colleagues have been analyzing the state of inland water resource systems, quantifying the role of engineered technologies, and helping to design alternative approaches to water security using green-gray infrastructure.