Our world is filled with living things too small to see. Some of these microorganisms are harmful, a... more

We learn about the world by seeing and hearing, but how do light and sound actually work? This book ... more

This book introduces readers to a range of endangered animals found in Asia. Readers learn basic fac... more

This book introduces readers to a range of endangered animals found in Africa. Readers learn basic f... more

This book introduces readers to a range of endangered animals found in Australia. Readers learn basi... more

This book introduces readers to a range of endangered animals found in Europe. Readers learn basic f... more

This book introduces readers to a range of endangered animals found in North America. Readers learn ... more

This book introduces readers to a range of endangered animals found in Europe. Readers learn basic f... more

This book introduces readers to a range of endangered animals found in North America. Readers learn ... more

Minerals looks at how different minerals form, are eroded, and are used in society around the world.... more

Fossils looks at how fossils can form, are preserved, and sometimes discovered.... more

Crystals looks at how crystals form, change, and are used in society around the world.... more

Natural disasters are some of the scariest and most fascinating events that occur. This series looks... more

Awesome and powerful, volcanic eruptions have wiped out towns and civilizations throughout history. ... more

Tornadoes occur throughout the world, but where do they happen most often in the United States. Read... more

Volcanic eruptions, landslides, and underwater earthquakes can all cause tsunamis, deadly waves that... more

Awesome and powerful, volcanic eruptions have wiped out towns and civilizations throughout history. ... more

Tornadoes occur throughout the world, but where do they happen most often in the United States. Read... more

Volcanic eruptions, landslides, and underwater earthquakes can all cause tsunamis, deadly waves that... more

Have you ever wondered what qualifies something as a hurricane rather than a strong windstorm? Read ... more

Scientists estimate that each year there are several million earthquakes throughout the world. Some ... more

Flood zones are not the only places that can be affected by floods. Read about what causes floods, h... more

Have you ever wondered what qualifies something as a hurricane rather than a strong windstorm? Read ... more