Megan Kopp

In this collection of spine-tingling tales, a woman encounters a deadly box full of eyeballs and a boy watches as a princess takes off her head.

Photographs and text provide accounts of some of the greatest players and moments in the history of professional football.

Discusses the Liberty Bell, a national symbol, what it stands for, and where it was made, .

Describes the Milky Way and other galaxies, including what they're made of, shapes, and clusters.

Presents information on sinkholes, including how they are studied and mapped, different types of sinkholes, areas where they form, famous sinkholes around the world, and the damage they cause. Includes a quiz, an activity, and a glossary.

Learn the geography, history, symbols, and interesting facts about New Hampshire.

Some aquatic animals are highly social, like dolphins, while others, like sharks, are mostly loners. Read all about how and why dolphins, whales, sea lions, and sharks communicate in the wild, what these different signals mean, and how humans study the language of ocean animals.

Did you know that all but two of the more than 4,200 species of mammals give birth to live young? The platypus and the echidna hatch their young from eggs. Discover more fascinating facts in Mammals, a Life Cycles book.

Learn the geography, history, symbols, and interesting facts about South Dakota.

Explore the physical characteristics, natural habitats, history, and folklore of prairie dogs.