I won this book in a first reads book giveaway. I found it fascinating. The author does a really good job of intertwining his conversations with Aubrey, a staunch proponent of the possibility of achieving immortality, with research of other scientists and references to immortality in literature and religion. He spends a good bit of time describing the science behind the structure and functioning of human cells as well as that of other life forms. He writes in a manner that engages the non-scientist but does not dumb it down to the point that it would be insulting. He includes research from other scientists related to genetics and cellular biology among other topics. He eloquently juxtaposes the research with philosophical musings related to the pros and cons of living forever. He brings up some very good points on both sides of the coin and I enjoyed the pondering that it inspired in me.