Neanderthal siblings Lucy and Andy are back to their paleo pranks. This time, they have to put up with more than just each other-the cave is feeling awfully cramped since the humans moved in. They're in the Ice Age, and legroom comes at a real premium! Jeffrey Brown skillfully blends humor and history with paleontologist sections: Timeline of Key Discoveries, Ice Age Fact vs. Fiction, Silly Cavemen Myths, and more.