Bridges are a crucial part of trade and transportation. They allow vehicles and pedestrians alike to cross everything from rushing rivers to rocky ravines.Readers (Grades 3-5) will trace the history o
Known for their size and their toxic bites, king cobras can pump enough venom through their fangs to kill a fully-grown elephant. Readers will discover how these sneaky snakes capture their prey, slit
Descended from domesticated animals, herds of wild horses roam plains, deserts, and wetlands around the world. Readers will learn how these feral populations came to exist, how they are different from
The loud, deep call and remarkable size of the American bullfrog set it apart from the thousands of other frog species scientists have identified. Readers will discover how this ferocious hunter catch
Large, peaceful, and slow-moving, it is no wonder why manatees are known as the cows of the sea. Readers will learn where manatees live, what they eat, and how they raise their young. They will also f
