harpercollins

People have taken dangerous risks trying to fly. Some inventors built wings for their arms and flapped them like birds. Others tried to fly with ba...

The food we eat helps our bones and muscles, skin and hair, teeth and toenails grow bigger and longer and stronger. Inside and outside, we grow and...

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 ...

Life In Outer Space Bears and birds, people and planets -- many things live on planet Earth. But do they live anywhere else? For a long time people...

Holly Keller has created vivacious new paintings for this favorite Reading Rainbow title about geology. Readers follow two enthusiastic rock hounds...

Ages: 5 - 9 Editorial Reviews From School Library Journal Grade 1-3--The span of activities occurring in a reef is seamlessly presented in a "day i...

Turtles are among the oldest living creatures in the world. They have been on earth for nearly 200 million years! In Look Out for Turtles! readers ...

Can you see the moon? Does it look like a big round ball? Or is it just a sliver of light in the sky? The moon seems to change. But it doesn't real...

Walk, run, skip, march, kick. We use our feet all the time! With her trademark simple words and delightful pictures, Aliki explains the many ways o...

"[Here is] a charming introduction to the truly amazing octopus [from its intelligence to its ability to change colors to the camouflaging black in...

Did you know that an oil spill occurs somewhere in the world almost every day of the year? Oil spills can have many different causes, but the resul...

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? Editor...

Bubbles What are bubbles made of? Why are they always round? Read and find out about the science behind soap bubbles, and learn why bubbles always ...

What does your skeleton do? Your skeleton helps you leap, somersault, and touch your toes-without it, you would be as floppy as a beanbag! There ar...

Young stargazers learn about different star colors and brightnesses, how to locate major constellations, and how to make mini planetariums by using...

Why do you get sleepy? When you feel tired, your body is telling you that it needs a rest. Everyone needs sleep. Babies need lots of sleep. Grown-u...

Let's-Read-and-Find-Out about Snakes Slithering, scaly, and sly-snakes are fascinating reptiles. They are also hunters. Find out how snakes survive...

Snow is falling. Snow is wonderful - for sledding, for skiing, and for building snowmen. But did you know that snow can actually keep things warm? ...

Sounds are all around us. Clap your hands, snap your fingers: You're making sounds. Read and find out how people and animals use different kinds of...

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 produc...

Starfish have arms, but no legs. They have feet, but no toes. Starfish aren't fish, but they are living animals. Kids learn how starfish move, eat,...

The sun shines down on us, giving warmth and light. But did you know that the sun also makes the seasons? As the earth makes one complete rotation ...

The switch goes up -- the light goes on, The switch goes down -- the light goes off. It seems like magic! It's not -- it's electricity. But how doe...

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! Editorial Reviews Fr...