Brian Cox is a few years younger than I. He looks to be much younger. This book is a companion to his TV series. For me, it was largely bubble gum. I am familiar with the history of science, the current state of paleontology, and scientific philosophy, so only a small fraction of the book's thoughts and facts were unknown to me. His writing style is fine… anyone who discusses the Spanish Inquisition and adds that "nobody expects them" is OK by me.
Having said that, it would be a good read for the average person who wishes to hear possible scientific answers to most of the BIG profound questions.
On that basis, I would say it is a fine read.
Lee Moller is a life-long skeptic and atheist and the author of The God Con.