Now, I don't own an iPad, so I can't tell you if it's a good presentation of the book's contents or not, but here's a bit of what Cool Hunting has to say about it, in a rather glowing review:
You can interact with any element within the pages; a quick two-finger pinch will pull out infographics or pictures, expanding them to full-screen. All of the expandable elements also contain geotags that display on a global map, giving the user a vision of how the facts presented fit into the big picture. Some infographics and videos contain further interactive features, letting users focus on certain areas or concepts.
Sure, I've been known to express some rather old-fashioned ideas about books, but I have to admit this looks pretty cool.
(Via Cool Hunting.)