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Coral reefs are living things made up of tiny coral polyps and are unique, delicately balanced ecosystems that provide homes to hundreds of species of plants and animals, but environmental threats hav

Did you know that energy comes from the food you eat? From the sun and wind? From fuel and heat?You get energy every time you eat. You transfer energy to other things every time you play baseball. In

Millions of years ago, dinosaurs left their footprints all over the earth. With each discovery of a dinosaur footprint, ichnologists—scientists who study dinosaur tracks—learn more about these ancient

What happens to food after you eat it? In this newly illustrated book, complete with photos, Paul Showers and Edward Miller take you on a journey through the human digestive system into the mouth, dow

What do a fawn and a hermit crab have in common? They both use camouflage to hide from their enemies. A fawn’s spots help it blend in with its dappled surroundings, and a hermit crab might be mistaken

Find out all about the many kinds of webs spiders spin in this level 2 Let's Read and Find Out. How do spiders spin such large webs? Spiders produce a unique silk that can stretch from wall to wall,

An emperor penguin lays an egg on the Antarctic ice. In the bitter cold, miles away from the only source of food, how can the chick survive?

Bats fly into the spotlight in this exploration of such basics as where the live, how mothers raise their pups, and how they hunt for food. Included as well is a simple plan for a building a backyard

Apples Have you ever eaten part of a flower? You have if you have eaten an apple! Find out how an apple grows from bud to flower to fruit--ready for you to pick! Apples Have you ever eaten a part of a

"New illustrations and some text revision update this 1965 basic introduction to the skin and its functions. Four children take turns presenting different aspects of the skin, such as pigment and mel

How do we know what dinosaurs were like?Dinosaurs roamed the earth millions of years ago. Then suddenly they all died out. How do we know now what they looked like? How do we know that they really exi

Coral reefs are living things made up of tiny coral polyps and are unique, delicately balanced ecosystems that provide homes to hundreds of species of plants and animals, but environmental threats hav

What's so great about corn? Popcorn, corn on the cob, cornbread, tacos, tamales, and tortillas. All of these and many other good things come from one amazing plant. Aliki tells the story of corn: Ho

Aliki takes readers on a guided tour that begins with grazing cows, proceeds through milking and a trip to the dairy, and ends with some different foods made from milk. This revised edition of Aliki's

People have taken dangerous risks trying to fly. Some inventors built wings for their arms and flapped them like birds. Some built balloons. Some built machines that glided with the wind. It wasn't ea

There are forces at work whenever you throw a ball, run up the stairs, or push your big brotheroff the couch. Want to learn more about the forces around you? Read and find out!

In spring and summer, honeybees gather nectar to make into honey. These fascinating insects live and work together in complicated societies, complete with queen bees and workers. Read and find out abo

The earth is like a spaceship in orbit—it has everything on board that we need to survive: water, food, and air with oxygen. Unlike a space shuttle, Earth is able to renew its resources. Read and find

Stegosaurus had spikes along its back. Triceratops had long, sharp horns. Tyrannosaurus rex was enormous. Millions and millions of years before the first people lived, these fascinating creatures rule

Look around to see what uses oil—cars, airplanes, boats, factories, and countless other machines. The world is dependent on oil as its main source of energy. Although oil is plentiful right now, the s

Volcanoes are one of nature's great wonders. For years they can stand dormant, but once active they can erupt in tremendous explosions of power. Some eruptions are so big, they change the earth's clim

For hundreds of years people have wanted to fly. Countless tried and failed, but now flying is very common. Read and find out about the many obstacles that have been overcome so planes and people can

What goes up must come down. Everybody knows that. But what is it that pulls everything from rocks to rockets toward the center of the earth? It's gravity. Nobody can say exactly what it is, but gravi

The earth is getting hotter, and not just in the summer. The climate of your own hometown is changing. But why is this happening, and can we stop it? Read and find out!

Thousands of animal species have vanished in the last two centuries, and many others, like the Amur leopard, are almost gone.Read and find out about the world's most fascinating endangered animals ...

Read and find out all about eggs -- and how baby chicks grow inside of them. Learn how chicks develop,how they get the food they need to grow, and how a mother hen helps keep them safe in this simple

You've seen your own blood, when you have a cut or a scrape. You can see the veins in your wrist, and you've seen the scab that forms as a cut heals. But do you know what blood does for you? Without blood, you couldn't play, or grow, or learn. That's because just about every part of your body needs blood, from your muscles to your bones to your brain. How does your body use blood? Read and find out! Ages 10 – 14

The sun brings heat, warmth, and energy to the Earth. What is the sun made of? How big is it? How far away? Read and find out!

The International Space Station races through space at 17,500 miles per hour. How do people live there? What may they discover? Find out the story of the twenty-first century's great scientific advent

Imagine that you're walking on the moon. What is it like? For thousands of years people looked up at the moon and wondered about it. Now we know what the moon is like. There is no air on the moon and nothing grows, but there are towering mountains and deep craters--and much more! Colder than the desert, the hotter than the desert, the moon is an amazing place to explore.

Ka-choo! Brrr. Yawnnnn.Have you ever wondered what makes you sneeze when you're in a dusty room? Or shiver when you get out of the bathtub? Or yawn when you're tired? All of these actions are reflexes

Did you know that lightning bolts can be over a mile long? Or that they may come from clouds that are ten miles high? Storms can be scary, but not if you know what causes them. Before the next thunderstorm, grab this book by veteran science team Franklyn Branley and True Kelley and learn what causes the flash, crash, rumble, and roll of thunderstorms!

Have you ever dreamed of being an astronaut? Wondered what it might be like to see the sun set sixteen times in one day?Open this book and be transported on an information-packed voyage aboard the sp

Moonlight is really sunlight!Did you know that the moon doesn't make its own light? Instead, it receives light from the sun and reflects it to us on the Earth. Read and find out about how the sun, the stars and light bulbs make light so we can see.Did you know that moonlight is really sunlight? The moon can't make its own light, so it receives light from the sun and then sends it to us here on the Earth.Any child who's ever wondered about the fascinating properties of light will want to read this classic science title. Readers will even learn how fast light can travel: from the moon to the Earth in less than three seconds! Veteran science author Franklyn M. Branley's lively text and Stacey Schuett's new illustrations combine fun facts and hands-on activities in this accessible introduction to the science of light. Did you know that moonlight is really sunlight? The moon can't make its own light, so it receives light from the sun and then sends it to us here on the Earth.Any child who's

Many birds travel thousands of miles each year, migrating between summer and winter homes. Just how they find their way back and forth, sometimes returning to the exact same nesting grounds each year,

Did you know that an oil spill occurs somewhere in the world almost every day of the year? Berger and Mirocha focus on one of the worst spills in history—the 1989 Exxon Valdez oil tanker spill&#

What happened to the dinosaurs?For millions of years these fantastic creatures roamed our planet. Then, suddenly, they all disappeared. Scientists wonder why. What could have caused this huge extincti

How did those enormous dinosaur skeletons get inside the museum? Long ago, dinosaurs ruled the Earth. Then, suddenly, they died out. For thousands of years, no one knew these giant creatures had eve

?This trim overview gives young readers an excellent grounding on volcanoes in an efficient few words. There [is] a succinct and easily readable explanation of how volcanoes are caused by magma pushin

Dinosaurs are extinct now, but you can visit dinosaur skeletons in a museum. There you will meet Brachiosaurus, Stegosaurus, and Diplodocus and learn how they ruled the earth millions of years ago. Yo