One Earth profiles Black, Indigenous and People of Color who live and work as environmental defenders. Through their individual stories, the book shows that the intersection of environment and ethnicity is an asset to achieving environmental goals. The twenty short biographies introduce readers to diverse activists from all around the world, who are of all ages and ethnicities. From saving ancient trees on the West Coast of Canada, to protecting the Irrawaddy dolphins of India, to uncovering racial inequalities in the food system in the United States, these environmental heroes are celebrated by author and biologist Anuradha Rao, who outlines how they went from being kids who cared about the environment to community leaders in their field. One Earth is full of environmental role models waiting to be found.