Describes different kinds of valleys and canyons and how they are formed.

Describes the physical characteristics and behavior of bees.

Describes the characteristics and habits of the massive flesh-eating dinosaur, as well as theories about why it became extinct.

Describes the characteristics and habits of the small but fierce meat-eating dinosaur that lived in prehistoric times, as well as theories about its extinction.

Describes the physical characteristics, habits, and natural environment of the huge plant-eating apatosaurus and discusses theories on why it became extinct.

Describes the physical characteristics of penguins, looks at how they have adapted to life in a cold, watery environment, and discusses their different species, child-rearing behaviors, and threats to their survival.

A simple introduction to choosing and caring for a pet cat.

Explores details of the travels of Meriwether Lewis and William Clark in their exploration of the American West, covering topics such as their encounters with Native American tribes, documentation of a wide variety of plants and animals, and arrival at the Pacific Ocean, with illustrations, a timeline, and statistics.

Describes the basic behavior, physical traits, and life cycles of reptiles.

An introduction to gemstones, discussing the differnt types of stones, where they are found, and how they are made.