Age 9

Engage young minds with our high-low collection tailored for 9-year-old readers. Explore extremes in nature with titles on animals both big and small, delve into the fascinating world of extreme weather, and unravel unexplained mysteries. Plus, enjoy fun...

Stories of strange sights and creepy phenomena pop up all over the world. This spooky series highlights eight of these mysterious legends, revealing what the stories claim, some possible causes or explanations, and what people still don’t know for...

From forest-wide infernos to howling winds and rain, severe weather continues to inspire both awe and fear. This exciting series provides fascinating facts about several types of severe weather, including how they form, the most extreme weather events...

Earth is home to all kinds of astonishing creatures. This series uses short paragraphs of easy-to-read text and colorful photos to showcase some of the animal kingdom’s weirdest looks, wildest behaviors, and most impressive adaptations. Each book...

From forest-wide infernos to howling winds and rain, severe weather continues to inspire both awe and fear. This exciting series provides fascinating facts about several types of severe weather, including how they form, the most extreme weather events...

Earth is home to all kinds of astonishing creatures. This series uses short paragraphs of easy-to-read text and colorful photos to showcase some of the animal kingdom’s weirdest looks, wildest behaviors, and most impressive adaptations. Each book...

Stories of strange sights and creepy phenomena pop up all over the world. This spooky series highlights eight of these mysterious legends, revealing what the stories claim, some possible causes or explanations, and what people still don’t know for...

Is there scientific proof that ghosts exist? When is the best time to see ghosts? In which country are there stories about ghosts who haunt bathrooms? World Book's True or False?: Ghosts is here with the answers to these questions and more! Students are...

Is there a flower that smells like rotting flesh? Is there a plant that looks like a giant baseball? What about a plant named after a “Star Wars” character? World Book’s True or False?: Weird Plants is here with the answers to these questions and more!...

What’s the difference between a typhoon, a cyclone, and a hurricane? Who believes that frog marriages can end a drought? Does lightning ever strike the same place twice? World Book’s True or False?: Weather is here with the answers to these questions and...

Whose silhouette is on the NBA logo? Who is the world's fastest person? Which horse was the first to win the Kentucky Derby? World Book's True or False?: Sports is here with the answers to these questions and more! Students are encouraged to think for...

Who was the first woman in space? Was Rosa Parks the first person to be arrested for resisting bus segregation? Who was the youngest person to win the Nobel Peace Prize? World Book's True or False?: Remarkable Women is here with the answers to these...

Did prehistoric people hunt dinosaurs? Did Stone Age people like to "rock out" to music? Do Neandertals live among us today? World Book's True or False?: Prehistoric People is here with the answers to these questions and more! Students are encouraged to...

Did Billy the Kid ever rob a bank or a train? Who was Australia's most famous bushranger? Have there been any women outlaws? World Book's True or False?: Outlaws is here with the answers to these questions and more! Students are encouraged to think for...

What is a person who collects neckties called? Did hippies invent bellbottoms? Which ancient city had a shopping mall? World Book's True or False?: Fashion & Clothing is here with the answers to these questions and more! Students are encouraged to...

Which city has more than 100 letters in its name? Which city has a chocolate museum? In which city is it illegal to chew gum? World Book's True or False?: Cities is here with the answers to these questions and more! Students are encouraged to think for...

What is the most famous painting of all time? Was Michelangelo an art forger? Did Vincent van Gogh really cut off his own ear? World Book's True or False?: Art is here with the answers to these questions and more! Students are encouraged to think for...

Who was Marie Curie? Who was Confucius? Did George Washington Carver invent peanut butter? We at World Book answer all of your questions about people—and things that aren’t people, like places. Answer Me This, World Book answers questions about such...

Can I eat a wolf for supper? Do emus bite? Is a blobfish made of jelly? We at World Book answer all of your wild animalrelated questions—and not only questions about animals eating stuff . . . or you eating animals. Answer Me This, World Book answers...

How long will the sun burn? How hot can the sun be? Why does the sun go away at night? We at World Book answer all of your outer spacerelated questions—and not only questions about the sun. Answer Me This, World Book answers questions about such topics...

How are rainbows formed? What do clouds feel like? Why is the sky blue? We at World Book answer all of your sciencerelated questions—and not only questions about things that happen above your head. Answer Me This, World Book answers questions about such...

Why do older people lose their teeth? Does gum really take seven years to digest? Why can I curl my tongue? We at World Book answer all of your human bodyrelated questions—and not only questions about your mouth area. Answer Me This, World Book answers...

What’s the biggest shark? What’s the smallest shark? Why do sharks have rough skin? We at World Book answer all of your oceanrelated questions—and not only questions about sharks. Answer Me This, World Book answers questions about such topics as...

Did cavemen hunt dinosaurs? What was the biggest dinosaur skeleton ever found? Who would win in a fight: a shark or a dinosaur? We at World Book answer all of your prehistoric timesrelated questions—and not only questions about dinosaurs. Answer Me This,...

How does catnip affect cats and make them all loony? Why do dogs smell each other’s behinds? Do hamsters ever throw up after all that spinning? We at World Book answer all of your petrelated questions—and not only questions about pets. Answer Me This,...

Why does pizza taste so good? When was the chocolate chip cookie invented? Should I wait to swim after I eat? We at World Book answer all of your random questions—and not only random questions about food and food’s limits on fun. Answer Me This, World...

How does GPS work? How do mirrors work? How does a light bulb work? We at World Book answer all of your technologyrelated questions—and not only questions about how things work. Answer Me This, World Book answers questions about such topics as oceans,...