Description:This is one of the more powerful little books in science. The author elegantly describes such issues as how we can infer speed from footprints, a practical discussion of whether some dinosaurs were warm blooded, and other interesting topics. Most dinosaur books are either glorified picture books or narrative. This is a practical step by step discovery of "how we know what we know". This, and Random Walks in Biology, are the two best books of this type anywhere. As a biology teacher I've gotten a ton of good ideas and lessons out of this one.