I think I was on the page 3/4 spread of Swirl by Swirl: Spirals in Nature by Joyce Sidman with illustrations by Beth Krommes when I gasped because of the fantastic concept. I know this business about spirals in nature is something I should have known about, and I had heard of it. But I know a whole lot more now and in such an incredibly easy way.
Sidman explains in an afterward that a spiral is "a shape that curls around a center point. Spirals occur over and over in nature because they work so well in so many ways." In her marvelous picture book she organizes her information around various kinds of natural spirals. Some expand, some protect, some reach out.
What is particularly impressive is that this really is a picture book for the very young. There is only a modest amount of text. In fact, I can imagine sitting with this book and a child and not even reading the text, simply hunting for spirals on the pages.
I'm kind of excited about all my new spiral knowledge.