Over the past fifteen years, the Centre for Research Architecture at Goldsmiths, University of London, has brought together established and emergent scholars who convene to work with each other and share their ideas and insights. These assemblies have produced a space of critical encounter for developing new investigative methods, expanded spatial practices, and speculative propositions designed to respond to and intervene in the urgent political conditions of our time. This new series invites the reader into this ever-evolving pedagogical context. Each book is organized around a specific spatial issue and brings together a heterogeneous range of materials and contributors. The first work in the series, Border Environments, explores the entanglement of ecology and migration. It examines the interplay between discriminatory politics, emergent technologies, and bordering practices within the context of (constructed) natures by highlighting a variety of interventions, investigative techniques, visual projects, and modes of witnessing that address the role of both human and more-than-human actors in border struggles. As such, the book is also a provocation that can be used to identify and organize new lines of struggle connecting environmental and mobility justice.