This interdisciplinary book focuses on Charles Darwin’s extensively detailed observations of all forms of animate life across the global world—humans included. These existential realities of Nature are not commonly recognized in today’s world, yet they are all of sizable import in impacting both flora and fauna, thus in human understandings of the nature of the world and the nature of all forms of animate life. Darwin’s descriptively anchored observations furthermore tie in directly with Edmund Husserl’s phenomenological analyses of experience. However different their inquiries and wonder at the world and at human experience, their analyses show how descriptive foundations and a concern with origins are integral to both, and how methodology and a living dynamics are central to a recognition of the complementarity of biological-neurological sciences and phenomenology.