The environmental movement stands as the largest and potentially most crucial movement in history, given the stakes involved. However, advocating for the environment is no easy task. Environmentalists often face criticism and are seen as pessimists, despite their efforts to protect the planet. Each struggle seems doomed from the start, and even when victories are achieved, they must be defended repeatedly. Nonetheless, environmentalism represents a significant social innovation of the twentieth century and is vital for the twenty-first century. It has emerged at a pivotal moment in history, as humanity’s influence on the planet rivals that of nature itself.