We know that some of the most pressing issues facing the globe in the 21st century are complex and interwoven: from environmental crisis to unprecedented migration flows; from international development to the nature of global urbanism. Geographers, with expertise across the natural and social sciences, are at the vanguard of confronting these issues. The Geography Department at Cambridge – celebrating its centennial year in 2019 – has always led global geographical debate, whether through its path-breaking work on polar ice sheets, its world-leading research into concerns of international development, its climate modelling or recent studies of the nature of citizenship in urban slums or in the wake of violent conflict.