The world faces a climate crisis and an ascendant far right. Are these trends related? How does the far right think about the environment, and what openings does the coming crisis present for them? This incisive new book traces the long history of far-right environmentalism and explores how it is adapting to the contemporary world. It argues that the extreme right, after years of denying the reality of climate change, are now showing serious signs of reversing their strategy. A new generation of far-right activists has realized that impending environmental catastrophe represents their best chance yet for a return to relevance. In reality, however, their noxious blend of conspiracy, hatred and violence is no solution at all: it is the 'eco-socialism of fools'. Only a real commitment to climate justice can save us and stop the far right in its tracks. No-one interested in the struggle against right-wing extremism and the crusade for climate justice can afford to miss this trenchant critique of burgeoning ecofascism.