Science

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,...

Swing for the fences with Sports-Graphics Jr. This series of infographics for young readers breaks down the STEM concepts behind popular sports while enhancing visual literacy. Readers will learn to be strategic to increase basketball scores, dive into...

Humans have a complex relationship with planet Earth. Life depends on the planet's natural resources. Yet human activity has led to many environmental issues. Industry pollutes land, air, and water. Agriculture uses up clean water. In the Enviro-Graphics...

How is a volcano like a soft drink? To visit the largest known volcano, would you need a submarine or a spaceship? How fast can a pyroclastic flow go? True or False?: Volcanoes is here with answers to these questions and more! The True or False? series...

Can sharks get cavities? Do any of them live in rivers and lakes? Which shark is more famous: Baby Shark or Bruce? True or False?: Sharks is here with answers to these questions and more! The True or False? series reveals the surprising truths behind...

What is the difference between weather and climate? How do rising temperatures cause sea levels to rise? Where do greenhouse gases come from? True or False?: Climate Change is here with answers to these questions and more! The True or False? series...

How many kinds of ants are there? What is a true bug? Do periodical cicadas read magazines? True or False?: Bugs and Other Tiny Creatures is here with answers to these questions and more! The True or False? series reveals the surprising truths behind...

In Wolf or Coyote?, beginning readers will learn to spot the differences between these hunting mammals. Carefully leveled text relays what the animals look like and how they behave. Each page then asks readers to name which animal is shown in the photo...

In Turtle or Tortoise?, beginning readers will learn to spot the differences between these shelled reptiles. Carefully leveled text relays what the animals look like and how they behave. Each page then asks readers to name which animal is shown in the...

In Rabbit or Hare?, beginning readers will learn to spot the differences between these fuzzy mammals. Carefully leveled text relays what the animals look like and how they behave. Each page then asks readers to name which animal is shown in the photo...

In Frog or Toad?, beginning readers will learn to spot the differences between these hopping amphibians. Carefully leveled text relays what the animals look like and how they behave. Each page then asks readers to name which animal is shown in the photo...

In Cheetah or Leopard?, beginning readers will learn to spot the differences between these big cats. Carefully leveled text relays what the animals look like and how they behave. Each page then asks readers to name which animal is shown in the photo...

In Butterfly or Moth?, beginning readers will learn to spot the differences between these insects. Carefully leveled text relays what the insects look like and how they behave. Each page then asks readers to name which one is shown in the photo. Answers...

In Bee or Wasp?, beginning readers will learn to spot the differences between these insects. Carefully leveled text relays what the insects look like and how they fly and behave. Each page then asks readers to name which one is shown in the photo...

In Alligator or Crocodile?, beginning readers will learn to spot the differences between these scaly reptiles. Carefully leveled text relays what the animals look like and how they behave. Each page then asks readers to name which animal is shown in the...

In this book, early fluent readers will learn how sea slugs use varying bright colors to both warm off predators and camouflage themselves in the ocean. Vibrant, full-color photos and carefully leveled text will engage young readers as they learn more...

In this book, early fluent readers will learn how Brazilian rainbow boas get their shimmering, colorful scales and how their colors help them warn off and confuse predators and camouflage in their rain forest homes. Vibrant, full-color photos and...

In this book, early fluent readers will learn how poison frogs use varying bright colors to both warn off predators and camouflage themselves in the rain forest. Vibrant, full-color photos and carefully leveled text will engage young readers as they...

In this book, early fluent readers will learn how parrots get their colorful feathers and how their colors help them attract mates, warn off predators and rivals, and camouflage. Vibrant, full-color photos and carefully leveled text will engage young...

In this book, early fluent readers will learn how mandrills get their colorful rumps and faces and how their colors help them attract mates, establish rank in their troops, and camouflage in their forested homes. Vibrant, full-color photos and carefully...

In this book, early fluent readers will learn about the markings and colors of mandarinfish and how these fish live in the ocean. Vibrant, full-color photos and carefully leveled text will engage young readers as they learn more about mandarinfish and...

In this book, early fluent readers will learn how goldfinches get their colorful feathers and beaks and how their colors help them attract mates, camouflage, and communicate. Vibrant, full-color photos and carefully leveled text will engage young readers...

In this book, early fluent readers will learn how frilled lizards get their colorful frills and how they use their colors to defend themselves and survive. Vibrant, full-color photos and carefully leveled text will engage young readers as they learn more...

In this book, early fluent readers will learn how flamingos get their pink feathers, as well as how they live and behave in their flocks. Vibrant, full-color photos and carefully leveled text will engage young readers as they learn more about flamingos...

In this book, early fluent readers will learn how cuttlefish use colors to camouflage themselves, hunt, attract mates, and warn off predators. Vibrant, full-color photos and carefully leveled text will engage young readers as they learn more about...

In this book, early fluent readers will learn how chameleons use colors to camouflage themselves, heat themselves with sunlight, and even show their emotions. Vibrant, full-color photos and carefully leveled text will engage young readers as they learn...

In this book, early fluent readers will learn how blue-footed boobies get blue feet and how male boobies dance and use them to attract mates. Vibrant, full-color photos and carefully leveled text will engage young readers as they learn more about...

Help young readers learn about the creatures that they can visit with Zoo Animals! The book introduces readers to animals that live and play right in their neighborhoods. It features large, colorful photographs and easytoread words for beginning readers...

Help young readers learn about animals that can breathe underwater and swim with Water Animals! The book introduces readers to animals that live and play right in their neighborhoods. It features large, colorful photographs and easytoread words for...

Help young readers learn about animals that scuttle and crawl with SixLegged Animals! The book introduces readers to animals that live and play right in their neighborhoods. It features large, colorful photographs and easytoread words for beginning...

Help young readers learn about the animals in their lives with Pet Animals! The book introduces readers to animals that live and play right in their neighborhoods. It features large, colorful photographs and easytoread words for beginning readers or...

Help young readers learn about mammals with Furry Animals! The book introduces readers to animals that live and play right in their neighborhoods. It features large, colorful photographs and easytoread words for beginning readers or those who can't read...

Help young readers learn about flying birds with Feathered Animals! The book introduces readers to animals that live and play right in their neighborhoods. It features large, colorful photographs and easytoread words for beginning readers or those who...

Help young readers learn about animals around them with Farm Animals! The book introduces readers to animals that live and play right in their neighborhoods. It features large, colorful photographs and easytoread words for beginning readers or those who...

Help young readers learn about animals who live in dry climates with Desert Animals! The book introduces readers to animals that live and play right in their neighborhoods. It features large, colorful photographs and easytoread words for beginning...