Dr. Zhi Ning is an Associate Professor in the Division of Environment & Sustainability, The Hong Kong University of Science and Technology, Hong Kong SAR. Dr. Ning’s research interests cover the innovation and development of environmental monitoring technologies with a focus on low-cost sensor algorithm and its application on air quality research. Dr. Ning has active participation in the low-cost sensor related work initiated by USEPA, WHO and WMO, and has led his team to develop the air sensing technologies for use in the first marathon route sensor network, large scale urban mobile sensor network with wide recognition locally and globally. Besides the technology development, Dr. Ning’s research also aims to understand the physical and chemical process of air pollution in complex urban built environment and their impact on the air quality and public health.