This was a lofty attempt by Neil Shubin. It felt like a rather effervescent attempt to touch on everything within the course of one book. Given the level of detail on most subjects I think it works. Rounded up to 4 stars simply because I did t want to round down as the writing style was entertaining enough for me. A bit of a grand attempt, and missed the mark in a few places for me in the speculation department, but overall a solid and enjoyable read.