Introduces the migration patterns of monarch butterfies, describing the vast distances they cover, why they migrate, and the dangers they face along the way.

Ever since the first youngster in history had a pet, cats vs. dogs has been a hotly debated issue at recesses and lunch tables worldwide. Which one's better? Smarter?

Discusses Cleopatra's life, achievements, and legacy, as well as why she continues to fascinate generations of readers.

"Explore one of the most recognized figures in American history with this biography of Sacagawea. Kids will learn about her crucial role in the Lewis and Clark expedition and her influential legacy. The level 3 text provides accessible, yet wide-ranging, information for independent readers" --

Learn about Albert Einstein.

"Learn all about the world's most amazing skyscrapers - from the first, to the tallest, to how they're built, and everything in between - in this new National Geographic Kids Reader. The Level 3 text provides accessible, yet wide-ranging, information for fluent readers"--

Learn facts about Ancient Egypt, such as how they thought animals were gods, how they invented makeup, and how they made mummies.

"Biography of Buzz Aldrin for beginner readers"--

Learn about archaeology and what archaeologists do.

"100 fun facts about rocks, minerals, gems, and all things shiny"--