Yujie was born and raised in Luoyang, which is one of the most historical cities in China. As a Ph.D. student, he joined the STEP program at Princeton's School of Public and International Affairs in the fall of 2020. Before coming to Princeton, he received his master's degree in environmental science from Zhejiang University and earned his bachelor's degree in environmental engineering from Southwest Jiaotong University. His previous research focused on using the chemical transport model (CTM) and other numerical models to characterize air pollution in China. At Princeton, he wants to use scientific methods to shed light on climate change and air pollution problems over the world, thus developing practical and effective policies to mitigate them while maximizing environmental benefits and minimizing economic costs.

Michelle is a Ph.D. student in Security Studies at Princeton University’s School of Public and International Affairs. Her research interests focus primarily on the issues of limited resources and competition in the space sector and how those aspects affect the policies driving the operationalization and commercialization of space technologies. She is also interested in the intersections between space and cybersecurity. Prior to Princeton, she worked for the FBI in the New York Field Office after interning at the Columbus Resident Agency under the Cincinnati Field Office. She holds a dual B.A. in English and security and intelligence with a minor in Japanese from The Ohio State University.