WHAT, HOW AND WHY Did you know that the smallest lizard in the world can fit easily on a dime, measuring only three-quarters of an inch from its snout to the tip of its tail? or that toothpaste isnt striped when its inside a container? These are just two of the amazing facts you'll learn in Who Knew?. Pick up this huge, encyclopedic guide when you're looking for specific information or in the mood to browse.