Commissioned to celebrate the 40th year of Antipode: A Radical Journal of Geography, this book evaluates the role of the critical social scientist and how the point of their work is not simply to interpret the world but to change it. Brings together leading critical social scientists to consider the major challenges of our time and what is to be done about them. Applies diagnostic and normative reasoning to momentous issues including the global economic crisis, transnational environmental problems, record levels of malnourishment, never ending wars, and proliferating natural disasters. Theoretically diverse - a range of perspectives are put to work ranging from Marxism and feminism to anarchism. The chapters comprise advanced but accessible analyses of the present and future world order.