Ever wonder what happens when you go to sleep at night? Discover all that's still going on in the world after dark, in this intriguing, fact-packed introduction to the science of night. What happens when we go to sleep at night? Now young readers can find out, in this entertaining exploration of the science of night. Nocturnal animals are hunting for food. Plants are using math (!) to conserve their overnight energy. Celestial objects only visible after dark are shining brightly in the night sky. Even our own bodies and brains are still working to keep us healthy! Amazing as it is, the world doesn't stop just because we've closed our eyes. Lisa Deresti Betik has created a fun, engaging and fact-packed introduction to the science of what happens in the world after dark. Children will be delighted to find the answers to questions such as: Why do we dream? How do bats use echolocation? What blooms in the moonlight? Why do stars twinkle? Thoroughly researched and vetted by several experts, this book covers multiple STEM topics, leading to tons of direct curriculum links in earth science, life science and physical science. The comprehensive, wide-ranging approach allows for loads of fun facts that will appeal to children. Josh Holinaty's stylish illustrations create a striking nighttime look with a limited, dark color palette. The text is supported by a glossary, an index and suggested sources for further reading.