Ta-Chih Hsiao is a professor at the Graduate Institute of Environmental Engineering at National Taiwan University, where he brings a wealth of expertise in civil and environmental engineering. Born and educated in Taiwan, he completed his B.S. in Civil Engineering at National Taiwan University before moving to the United States to further his education. He holds an M.S. in Civil and Environmental Engineering from Stanford University and a Ph.D. in Energy, Environmental and Chemical Engineering from Washington University in St. Louis. During his doctoral studies, he was honored as a McDonnell International Scholar. Following his Ph.D., Professor Hsiao was appointed to a prestigious NRC postdoctoral position at the National Personal Protective Technology Laboratory, part of the National Institute for Occupational Safety and Health under the CDC, USA. His research focuses on a range of critical topics within environmental engineering, including the measurement, monitoring, and control of particulate matter; particle instrumentation and characterisation; nanoparticle generation and physics; aerosol and cloud microphysics; and the toxicity of PM and nanoparticles/ultrafine particles. Professor Hsiao’s contributions to science and education have been recognised with numerous awards. Recently, in 2022, he received both the Research Achievement Award and the Teaching Excellence Award from the College of Engineering at National Taiwan University. His commitment to research was highlighted in 2018 when he was awarded the Distinguished Young Scholar Research Proposal from the Ministry of Science and Technology in Taiwan to investigate the effects of particle morphology on CCN activation ratio and hygroscopicity. An active participant in the international scientific community, Professor Hsiao has served on the International Advisory Board for the 21st Conference on Nucleation & Atmospheric Aerosols and as a member of the International Advisory Committee for the 11th International Aerosol Conference. He is also the Vice President of the Taiwan Association for Aerosol Research since 2022 and has been an editorial board member for the Journal of Hazardous Materials Letters since 2020. Professor Hsiao’s editorial roles include serving as the editor of Aerosol and Air Quality Research since 2017 and as guest editor for special issues on long range transported air pollutants. His ongoing affiliation as a Graduate Faculty Member at Virginia Commonwealth University since 2016 further underscores his commitment to advancing environmental engineering education globally.