A science teacher at our local high school gave me her copy of this book because it is her favorite book. I was honored that she would let me into her world.
I liked it because it wasn't just "here's what is true." It is a history of the history of discovery. He starts with the first discovers (of say the atom, cells, evolution, the age and structure of the earth), then he adds what the next guy found and so on and so on. He adds the behavior and temperament of the scientists (or even more often it was just an interested amateur who made the discoveries.)
The last section of the book (473 pages for the whole book) is on evolution. This is an area which I have done little to no reading, but am irritated that the Creationist side seem to usually just want to sweep into oblivion with no real discussion.
What I found interesting in his book (and he gives no indication of being a Christian) is that about 25,000 years ago, humans as we know them appeared. Scientists want to think they evolved from apes but there are no real links. We don't have a lot of evidence.
There were another kind of human before that (neadertal for one -- no, I didn't mistype and forget the h. It is neandertal.). There was also an age where life beyond bacterial life seemed to just explode.
I don't expect a scientist to say, "Well that was where God stepped in." I expect a theologian (amateur though I am) to step in and say, "Perhaps that is where God stepped in."
The Bible seems to talk (vague that it is) about the earth preexisting. "1In the beginning God created the heavens and the earth. 2Now the earth was formless and empty, darkness was over the surface of the deep, and the Spirit of God was hovering over the waters." -- Genesis 1:1-2 So God created it, it developed for a while, and then God did some more work.