Students will read about the mysterious unicorn, why it has fascinated people over the centuries, how primitive people considered the New Moon the unicorn, how Marco Polo mistook a rhinoceros for a unicorn, and how, in 1985, Ringling Brothers Circus tried to use unicorn pretenders. Beautiful color photographs and inset boxes illustrate the text. Appendixes include a 1-page glossary and a 2-page bibliography of books and Web sites.