What is glowing in the waves? How did that stone get from here to there? Nature is filled with mystery! Through engaging text and images, this hi/lo series explores many of nature's mysterious phenomena. Reluctant readers can learn how each phenomenon has been explained across different time periods and cultures. Then, they dive deep into today's science surrounding the subject. Special features supplement carefully leveled text through profiles, comparisons, and more. Get ready to explore the many mysteries of nature!