Wonyong Choi received his B.S. from Seoul National University (Korea) in 1988, M.S. from POSTECH (Korea), and Ph.D. from the California Institute of Technology (Caltech, USA) in 1996. He then conducted postdoctoral research at NASA's Jet Propulsion Laboratory from 1996 to 1998. He joined POSTECH in 1998 as an Assistant Professor and was promoted to Full Professor in 2008. In 2022, he moved to the Korea Institute of Energy Technology (KENTECH), where he established the Center for Environmental and Climate Technology and serves as its inaugural Director. His research interests are centered on semiconductor photo (electro)catalysis and photochemistry for solar energy conversion and environmental applications. He has received numerous prestigious honors, including the Young Scientist Award from the Korean Academy of Science and Technology (KAST) in 2005, the KAST Science and Technology Award in 2015, the Korea Engineering Award in 2018, and the Korea Toray Science & Technology Prize in 2024. He was elected a Member of KAST in 2014, a Member of the National Academy of Engineering of Korea (NAEK) in 2023, and an International Member of the U.S. National Academy of Engineering (NAE) in 2024. With more than 380 peer-reviewed articles published and a Google Scholar H-index of 130, he has been recognized as a Highly Cited Researcher by Clarivate Analytics consecutively from 2019 to 2025. He served as an Editor for the Journal of Hazardous Materials (2008−2017) and as an Associate Editor for Environmental Science & Technology (ES&T) (2017−2019). He is the inaugural Editor-in-Chief of ACS ES&T Engineering (2020-present).