Environmental change presents a new context and new opportunities for transformational change. This timely book will inspire new ways of understanding the relationship between environmental change and human security. A Changing Environment for Human Security: Transformative Approaches to Research, Policy and Action both supports and informs a call for new, transformative approaches to research, policy and action. The chapters in this book include critical analyses, case studies and reflections on contemporary environmental and social challenges, with a strong emphasis on those related to climate change. Human thoughts and actions have contributed to an environment of insecurity, manifested as multiple interacting threats that now represent a serious challenge to humanity. Yet humans also have the capacity to collectively transform the economic, political, social and cultural systems and structures that perpetuate human insecurities. These fresh perspectives on global environmental change from an interdisciplinary group of international experts will inspire readers – whether students, researchers, policy makers, or practitioners – to think differently about environmental issues and sustainability. The contributions show that in a changing environment, human security is not only a possibility, but a choice.