Gaia by James Lovelock presents the groundbreaking Gaia hypothesis, which proposes that Earth and its biological systems function as a single, self-regulating organism. Lovelock suggests that life interacts with the atmosphere, oceans, and geology in ways that maintain the planet’s habitability, stabilizing conditions like temperature and chemical composition. This idea challenges conventional views of life and the environment, framing Earth as a dynamic, interconnected system where living organisms actively shape and sustain the conditions for life. The book has had a profound impact on environmental science, inspiring new ways of thinking about ecology, sustainability, and humanity’s role within the planet’s systems.