Environmentalism from Below takes readers inside the popular struggles for environmental liberation in the Global South. These communities-among the most vulnerable to but also least responsible for the climate crisis-have long been at the forefront of the fight to protect imperiled worlds. Scholar and activist Ashley Dawson constructs a gripping narrative of 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. As Dawson reminds us, the fight against ecocide is already being waged worldwide. It demands our solidarity.