Angel Hsu is an Assistant Professor at Yale-NUS College and the Yale School of Forestry and Environmental Studies. She is Director of the Yale Data-driven Environmental Solutions Group and Principal Investigator of the Environmental Performance Index (EPI) - a global ranking of national environmental performance that is jointly produced with Columbia University and launched at the World Economic Forum annual meeting in Davos. Her research explores the intersection of science and policy and the use of data-driven approaches to understand environmental sustainability, particularly in the areas of climate change and energy, water, and air quality.