Discover fascinating facts and figures about the longest things in the world! From the longest bridge to the longest dinosaur, find out what makes it into the top ten from end to end. More →

Discover fascinating facts and figures about the slowest things in the world! From the sleepy-seeming sloth to incredibly sluggish cars, find out what creeps into the slowest top ten ever. More →

Discover fascinating facts and figures about the tiniest things in the world! From the smallest country to the teeniest mobile phone, find out what makes it into the smallest top ten ever. More →

Discover fascinating facts and figures about the world's tallest…everything! From the tallest human being to towering mountains, find out what tops the tallest top ten ever. More →

So many kinds of cats to choose from! This series features the fur, bodies, meows, and behaviors that make each breed unique. A quiz tests whether readers are ready to be kitty caregivers,… More →

What do fans of college football want to know? They want to know which team is the best! Each year, the College Football Playoff decides the national champion. Read all about unforgettable… More →

Woof! Woof! What makes German shepherds, shih tzus, Labrador retrievers, poodles, golden retrievers, and French bulldogs top breeds for a family pet? Short and simple text with full color… More →

In this Hi-Lo series, readers will learn about one of the top crossbreeds. Adorable images of Doodles and simple text engage reluctant readers. Each book features the quiz "Am I Ready to Be a More →

What do soccer fans want to know? They want to know which nation's team is the best! Every four years, the FIFA Men's World Cup decides which country has the championship team. Read all about More →

Ready to take a shot at making the high school team? The TOP HIGH SCHOOL SPORTS series has information on the basic rules of different sports, the teams and positions, and the gear you'll… More →