Starting with the basic question of what a desert is, and proceeding through a wide variety of questions about the dry desert climate, desert animals, and the different ways humans use the desert, "I Wonder Why the Sahara is Cold at Night" is a great introduction to this important environment. The question and answer format gets young readers the information they want--like how rattlesnakes kill their prey--while opening up the opportunity for further discussion. The humorous illustrations, child-friendly text, and open-anywhere format make this series a great choice for reluctant readers.