Water is a precious natural resource that we all must work hard to protect. As readers discover where the world?s water comes from, they ...
Recycling is an easy way to help protect the planet. Young readers learn the basics of recycling, including what materials are most ...
Oil spills can spread for hundreds of miles in water. Animals can die if they eat litter. These are just two of the many ways pollution can ...
How does human behavior affect animals, and what can we do to help animals that are endangered? Readers find the answers to these and other ...
The Shang Dynasty marked the beginning of recorded history in China. This ancient civilization has been studied by historians and ...
The ancient Romans developed a civilization unlike any other. Readers discover what made ancient Rome so unique and how its influence can ...
Which civilization gave us the Olympic Games? It?s ancient Greece, and readers discover this and other fun facts as they explore one of the ...
There was more to life in ancient Egypt than building pyramids and mummifying bodies. Readers explore the complex and unique civilization ...
Alligators, crocodiles, and lizards are all amazing animals, and they are also all reptiles. Why are these cool creatures classified as ...
