A global account of the grassroots environmental movements on the frontlines of the climate crisis. Environmentalism from Below takes readers inside the popular struggles for environmental liberation in the Global South. These communitiesamong the most vulnerable to but also least responsible for the climate crisishave long been at the forefront of the fight to protect imperiled worlds. Today as the worlds forests burn and our oceans acidify grassroots movements are tenaciously defending the environmental commons and forging just and sustainable ways of living on Earth. Scholar and activist Ashley Dawson constructs a gripping narrative of these movements of climate insurgents from international solidarity organizations like La Via Campesina and Shack Dwellers International to local struggles in South Africa Colombia India Nigeria and beyond. Taking up the four critical challenges we face in a warming worldfood urban sustainability energy transition and conservationDawson shows how the unruly power of environmentalism from below is charting an alternative path forward from challenging industrial agriculture through fights for food sovereignty and agroecology to resisting extractivism using mass nonviolent protest and sabotage. An urgent essential intervention Environmentalism from Below offers a hopeful alternative to the gridlock of UNbased climate negotiations and the narrow nationalism of some Green New Deal efforts. As Dawson reminds us the fight against ecocide is already being waged worldwide. Building on longstanding traditions of anticolonial struggle environmentalism from below is a model for a peoples movement for climate justiceone that demands solidarity.