Hannah Ritchie is a Scottish data scientist based at the University of Oxford, where she works as a senior researcher in the Oxford Martin School. She also serves as deputy editor at Our World in Data, an organization focused on presenting global development data and research. Ritchie's research centers on sustainability across multiple interconnected areas including climate change, energy systems, food and agriculture, biodiversity, air pollution, deforestation, and public health. Her work combines data analysis with research on these critical environmental and social challenges.