Argues that a just transition from fossil fuels and other drivers of climate change will not be delivered by businesspeople or politicians that support the status quo. Nor will electing green left leaders be enough to overcome the opposition of capitalists and state bureaucrats. Only the power of disruptive mass social movements has the potential to force governments to make the changes we need, so supporters of climate justice should commit to building them. Confronting the question "what if heating above 2 degrees becomes unavoidable?" and refusing to despair, David Camfield argues that even a ravaged planet is worth fighting for--and that ultimately the only solution to the ecological crisis created by capitalism is a transition to ecosocialism.