In this prescient book, Klaus Dorre combines a vision of a climate-just society with a reformulation of socialist ideas that can guide the way to a ‘sustainable socialism’ for the 21st Century.Chapters cover a vast array of topics, including today’s economic-ecological meta-crisis, digital socialism, the need for an immediate, effective transition to more sustainable living, and the recent effects of the COVID-19 pandemic. Recognizing modern-day politics’ aversion to the ‘s-word’, Dorre reformulates socialism for a contemporary audience and argues for the practicality and realisability of alternatives to capitalism. In a ground-breaking approach, Dorre uses the UN Sustainable Development Goals as a normative basis upon which to measure the actions and policies which will be needed to create just and resilient societies. The book outlines and recommends key transitional strategies that can serve as a compass guiding us to a sustainable world.This timely book will be a vital resource for researchers, academics and students of sociology and sociological theory, political theory and philosophy, political economy and international politics. Providing an innovative approach to many of society’s current issues, Rethinking Socialism will also be of interest to governmental policymakers and think-tank experts as well as trade unionists, climate activists, and those involved in feminist and indigenous movements.