There is persuasive evidence suggesting we are on the brink of human-induced ecological disaster that could change life on Earth as we know it. There is also a general consensus among scientists about the pace and extent of global ecological decay, including a realisation that humans are central to causing the global socio-ecological crisis. This new epoch has been called the Anthropocene. Considering the many benefits that constitutional environmental protection holds out in domestic legal orders, it is likely that a constitutionalised form of global environmental law and governance would be better able to counter the myriad exigencies of the Anthropocene. This book seeks to answer this central question: from the perspective of the Anthropocene, what is environmental constitutionalism and how could it be extrapolated to formulate a global framework? In answering this question, this book offers the first systematic conceptual framework for global environmental constitutionalism in the epoch of the Anthropocene