Bringing together intersectional perspectives across disciplines such as the humanities, arts and social sciences, this book explores borders and crossings in relation to environmental damage and injustice in the context of the climate crisis. Focusing on historical and contemporary borders and barriers, both physical, ideological, and ontological, this book examines their crossings, transformations, expansions, and reconfigurations in the post-COVID era of climate crisis. It explores the power of nationalist ideas that promote borders and the ways activists and artists work to challenge and break them down, looking at case studies such as the partition line in Cyprus and right wing extremism. Focusing particularly on the way in which climate change literally alters the physical geography of borders, it looks at the representation of environmental crises, borders, barriers, and walls in literature, theatre, and other cultural and artistic expressions by writers as diverse as Franz Kafka, FastHorse, Rafeef Ziadah, and Claudia Rankine.