Kartik Chandran earned his Ph.D. in Environmental Engineering from the University of Connecticut (1999), as well as his B.S. in Chemical Engineering from the Indian Institute of Technology. He is Professor of Earth and Environmental Engineering at Columbia University, where he leads the Columbia University Biomolecular Environmental Science program and the Wastewater Treatment and Climate Change program. Under his stewardship, the research directions of biological wastewater treatment and biological nitrogen removal were established for the first time ever in the history of Columbia University. Dr. Chandran is keenly interested in developing novel models for sustainable sanitation and wastewater treatment, with a specific focus on managing the global nitrogen cycle and linking it to the carbon cycle, the food cycle, the water cycle and the energy cycle. Dr. Chandran was a senior technical specialist with the private engineering firm Metcalf and Eddy of New York, Inc., before returning to academia as a research associate at Virginia Polytechnic Institute and State University. He has received the Water Environment Research Foundation’s Paul L. Busch Award, the National Science Foundation CAREER Award, and is a Fellow of the National Academy of Science.