Professor Mohtar is a TEES (Texas Engineering Experiment Stations) Endowed Professor with dual appointments in the Zachry Department of Civil Engineering and the Department of Biological and Agricultural Engineering, Texas A&M University. Mohtar’s research addresses global resource challenges: developing the Water-Energy-Food Nexus framework linking science to policy, characterizing soil-water medium using thermodynamic modeling, non-traditional water applications for sustainable integrated water management. He pioneered the development of a conceptual and modeling framework for the Water–Energy-Food (WEF) Nexus in an effort to better understand the interrelationships and explore their implications. Mohtar uses quantitative frameworks to assess sustainable resource allocation tradeoffs, aiming to provide effective tools to empower dialogue between policy makers and scientists. Mohtar has developed programs for the evaluation of environmental impact of land use and water management; developed innovative soil and groundwater remediation technologies, and applied numerical methods to biological engineering system, characterizing the soil water medium at the pedon, field, and watershed scales. He has designed and evaluated international sustainable water management programs addressing population growth and water shortage conditions in arid climates. His research has resulted in improved methods for environmental and natural resources engineering, many of which have been adopted by other professionals and agencies internationally. Mohtar has published over 200 peer-reviewed articles, refereed conference proceedings, books and book chapters. He is a distinguished alumnus of American University of Beirut (2014), recipient of the Ven Te Chow memorial award, International Water Resources association (2015) and Kishida International Award (2010), Mohtar served World Economic Forum Global Agenda Councils on Water Security and on Climate Change (2009-2014), served as a Governor of World Water Council (2012-2016).