Explains how fossils are formed and what they tell us about the past.

Even though Mount Everest measures 29,028 feet high, it may be growing about two inches a year. A mountain might be thousands of feet high, but it can still grow taller or shorter each year. Mountains are created when the huge plates that make up the earth's outer shell very slowly pull and push against one another. Read and find out about all the different kinds of mountains. The earth's continents rest on plates that move slowly across our planet's...

In simple text, presents the three states of matter, solid, liquid, and gas, and describes their attributes.

Explains the processes by which a hamburger and other foods are used to make energy, strong bones, and solid muscles as they pass through the digestive system.

Discusses trash and how we can stop throwing so much away.

Read and find out about one of nature's most mysterious forces-the earthquake. Some earthquakes are so small that you don't even feel them, while others can make even big buildings shake! Learn why earthquakes happen, where they are most likely to occur, and what to do if one happens near you.

Explains the phases of the moon--the changes that seem to happen to it as it goes around Earth.

You are lying in bed listening to the soft sound of rain. It has been coming down for hours. Now something is changing. The rain sounds harder and louder, and there is water running down the road, which looks like a small river. What is happening? You are hearing and seeing the start of a flood. Read and find out about the different kinds of floods, how they start, and how to stay safe. With colorful illustrations from Amy Schimler-Safford and engaging...

Why does a magnet pick up a paper clip but not a leaf or a penny? How can the whole world be a magnet? Follow the step-by-step instructions about how to make your own magnet, and then find out for yourself what makes a magnet!

The earth -- and everything on it -- needs water. But lately, it's been unusually sunny, warm, and dry. The weather anchor announces that your area is experiencing a drought! Where do droughts happen? How do we know that we are in a drought? Why is rainfall important? Do droughts just affect people? Can scientists keep track of rainfall? Read and find out! This book is full of activities, like how to measure rainfall, how to visualize how much of...