This book looks at the impact of environmental activists, from John Muir to Rachel Carson, and the events that had wide-ranging impact, such as the Santa Barbara oil spill, the Standing Rock Sioux protest, and the campaigns by Indigenous communities around the world. Today, Earth activism is widespread and powerful, and often led by young voices, such as Swedish school student Greta Thunberg and new groups such as Extinction Rebellion. Links to further information help readers find out more about current campaigns and become activists themselves.