Symbiotic Earth is the story of a scientific rebel. A model of female empowerment, Lynn Margulis fought the male establishment and, through her persistence, triumphed. As a young scientist in the 1960s, Margulis was ridiculed when she articulated a theory that symbiosis was a key driver of evolution. Instead of the mechanistic view that life evolved solely through random genetic mutations and competition, she presented a symbiotic narrative in which bacteria joined together to create the complex cells that formed animals, plants, and all other organisms. The idea that all of life is deeply interconnected and collaborative has radical implications for how we look at and understand our selves, our species, our relationships, our kin, sex, death, resilience, adaptability, regenerativity, ecology, evolution, our changing environment and our climate.