What does it mean to live, to be alive, to be a being both a part of the world but yet separated from it by our skin? This scientific and philosophical exploration delves into one of the oldest questions of mankind. Exploring the meanings of death, the origins of life, the biological connection between death and sex, the symbiotic evolution of the five organic kingdoms - bacteria, protoctists, animals, fungi and plants, the authors make the assertation that to answer the question What is Life? is a linguistic trap: the answer is not a noun, but a verb - life is a complex material process, constantly changing.