Gosh, this was disjointed. I found this so difficult to read and to follow! For instance, on one page a nice discussion of the Easter Island heads was presented, but on the facing page there was a discussion of the Tunguska Incident, the Nazca lines, and I don't recall--something else. Nothing on those pages was connected, and nothing seemed to flow together to form a coherent narrative. I just found this book to be, well, a mess.