Glowworms are special kinds of beetles that make their own light. They do this through a cool chemical reaction that takes place in their bodies. Readers learn fascinating facts about these insects through informative text as well as engaging fact boxes. Science concepts such as life cycles are presented in fun ways as readers explore the lives of glowworms and see detailed photographs of these insects. Whats the difference between a glowworm and a firefly? The answer is waiting for readers to discover!