My second National Geographic book in a month! I feel so educated.
This was a nice little book about the history of the peace symbol, from it's creation as a symbol for nuclear disarmament to the multitude of causes it represents today. Most fascinating to me were the legal battles the peace symbol has been part of, including whether decorations (such as peace signs) can be added to American flags.
On the other hand, I wasn't a fan of the layout of the book. The introductory summary to each chapter had a quotation in large letters that was interspersed with the narrative text (so you'd read a couple of lines of summary, and then be faced with a couple of words of quotation, and then go back to the summary). And then sometimes there'd be a picture in the middle of the page, but instead of splitting the text into two columns, the text continued all the way across the page. While neither choice made the book unreadable, they seemed like poor design choices from my perspective.