Dr. Peng Wang, Ph.D., is a faculty member at King Abdullah University of Science and Technology (KAUST) at Saudi Arabia and The Hong Kong Polytechnic University. He was a founding faculty member of KAUST. Dr. Wang is very passionate at global sustainability and strives to develop solutions contributing to water-energy-climate nexus. His current research focuses on renewable energy driven clean water production and wastewater treatment, zero-liquid-discharge desalination and industrial brine treatment, atmospheric water harvesting and its applications to smart cooling and energy conversion, resource recovery from wastewaters, brine, and seawater by electrochemical and membrane processes. Dr. Wang serves as an associate editor of Environmental Science & Technology, an academic journal published by American Chemical Society (ACS). He obtained his Ph.D. from Bren School of Environmental Science and Management at University of California, Santa Barbara (UCSB) in 2008.