Franklin M. Harold's On Life reveals what science can tell us about the living world. All creatures, from bacteria and redwoods to garden snails and humans, belong to a single biochemical family. We all operate by the same principles and are all made up of cells, either one or many. We flaunt capacities that far exceed those of inanimate matter, yet we stand squarely within the material world. So what is life, anyway? How do living things function, and how did they come into existence? Questions like these have baffled philosophers and scientists since antiquity, but over the past half-century answers have begun to emerge. Offering an inside look, Franklin M. Harold makes life accessible to readers interested in the biological big picture. The book traces how living things operate, focusing on the interplay of biology with physics and chemistry. He asserts that biology stands apart from the physical sciences because life revolves around organization-- that is, purposeful order. On Life aims to make life intelligible by giving readers an understanding of the biological landscape; it sketches the principles as biologists presently understand them and highlights major unresolved issues. What emerges is a biology bracketed by two stubborn mysteries: the nature of the mind and the origin of life. This portrait of biology is comprehensible but inescapably complex, internally consistent, and buttressed by a wealth of factual knowledge.

"The great success of this book is that it brings together evolution and cell biology into a popular science format. It strongly contributes to biology education and communication, especially in the context of its approach to explaining the evolution of complexity" - Franklin M. Harold, Quarterly Review of Biology

"Readers finish the book in awe at the still-unanswered questions that continue to confound understanding of the earliest steps toward cellular life and the greater complexity of multicellular organisms." - S. K. Sommers Smith, CHOICE

"Franklin M. Harold is a master at finding the humane boundaries of human knowledge. On Life is a finely cut gem for those who are curious about life's biggest questions. His prose is at once clear and poetic, folksy and inspiring. This is the zenith of a lifetime's quest to seek meaning in science." - Nick Lane, Professor of Evolutionary Biochemistry, University College London and author of The Vital Question: Why Is Life the Way it Is?

"Writing about 'life' can be tricky, but it is a topic I look forward to diving into when it's written by someone like Franklin M. Harold. He has such a long a record of scientific thought and experimentation, and he is able to cover both hard evidence as well as philosophical implications in an accessible way. On Life is an admirable contribution to the field worth reading" - Ben McFarland, Professor of Biochemistry, Seattle Pacific University and author of A World from Dust