One can study the biochemistry of photosynthesis in some detail and be unaware of the different pathways that exist and existed in different organisms, of its effect on the color of the sky, of its effect on the structural components of large plants and animals, and of the peculiarities of its evolutionary origin. Nick Lane gives a brilliant overview of the nature, significance and origin of the 10 greatest inventions of evolution including, the origin of life itself, DNA, photosynthesis, the eukaryotes, sex, movement, sight, warm bloodedness (homeothermy), consciousness, and death. I found the degree of detail to fit well with the text's readability and I was uniformly impressed with the author's knowledge and presentation. The relative low point, for me, was the chapter on consciousness. There is a great deal of interest there, but I think I am a little more radical than the author on this topic; he blows off Dennett with a single paragraph and he ends his discussion of the tragic case of a girl with hydranencephaly by stating that if it is the case that if the roots of consciousness are not to be found in the cerebral cortex, "then the neural transform, from firing to feeling, loses some of its mystique". Yes, that's what Dennett says, and it loses all of its mystique.