Capitalism has unleashed an environmental crisis it cannot solve. It destroys the planet and simultaneously prevents us addressing the crisis. Environmental protesters around the world are demanding ‘system change’ because they know that capitalism puts the pursuit of profit before the lives of people and the planet’s ecology. The only conclusion can be that capitalism must go and so the struggle for a sustainable world needs revolutionary politics. Building a sustainable future will require the end of capitalism and the creation of a new, socialist, world. In this book, socialist and environmental activist Martin Empson, outlines the sort of politics we need, and argues that revolution is not an abstract concept from history – but an ‘actuality’ for the 21st century. Indeed revolution is the only hope for humanity’s long-term future.