This book is a journey through the origin and evolution of life on Earth, mainly human evolution. Provocative in many ways, from the molecular level to our present condition. Examples of behavioral and social problems during our evolutionary pathway are openly discussed. The unknown facts, which remain as a mystery, are exposed in detail, providing the reader with an insight not common in the available literature. Modern concepts on the universe and our place on it are explained, based on the latest known evidences. Scientific facts, and those that science is unable to clarify, are stressed throughout the chapters. All available clues are put forward, including those that in the last forty years of researches indicate that we are not mere biological beings; we are something else. Probably, a matter-energy state that quantum physics may approach to elucidate.