Western science has long resisted and even ridiculed the idea that our planet is alive, but many scientists now recognize that Earth and life continually coevolve and that, together, they form a single, interconnected, living system. Ferris Jabr, NYT bestselling author and one of our most celebrated scientific writers, will explain how, over billions of years, microbes, plants, fungi, and animals radically altered the continents, oceans, and atmosphere, transforming what was once a lump of orbiting rock into our cosmic oasis. Life breathed oxygen into the atmosphere, dyed the sky blue, made fire possible, converted barren crust into fertile soil, and perhaps even helped construct the continents. Over time, life became critical to the planet’s capacity to regulate its climate and maintain balance. Life is Earth and Earth is life.