A photographic tour of the rain forest in the company of an experienced, adventurous guide. The author, who takes to the forest at night, in a canoe and up in the trees, introduces middle schoolers to the flora, fauna, bugs, ecology and conservation of the tropical forest. Knight, who devotes each double-page spread to a theme, re-creates the experience of being in the rainforest, including its discomforts. He wisely begins the book with what to wear. With a glossary and index, it's a good reference for young travelers to Costa Rica, the Amazon or forests of Southeast Asia.  (FST09, $19.95)