From the mysterious plagues and diseases of ancient times to global epidemics and the flu, these disasters have evoked fear in the hearts of people. This book looks at types of diseases, how… More →

From a stalk of corn to a pine tree, every plant is made of plant cells. What material is in these cells? How do they hold together? How do growers use their knowledge of cell growth to… More →

The plant kingdom contains more than 250,000 species. With green pigment called chlorophyll in some cells, these organisms have the unique ablility to make their own food. This colorful book… More →

We use it every day in products as varied as prescription drugs, toys, and toothbrushes. In less than a century, plastics have become integral to our daily lives. But plastic waste also clogs More →

A hungry polar bear is one of the most dangerous animals you will meet. A marine mammal, it hunts mostly seals on the sea ice in the Arctic. Read all about their amazing sense of smell, their More →

Police dogs are trained to do many different jobs. Some patrol, some are used to attack, and others are used to sniff out illegal substances. Find out how police dogs serve and protect… More →

Learn about the brave people who make their living protecting their fellow citizens in this essential police force careers guide. Detailed bios and descriptions of operations and incidents… More →

Pollution is seriously damaging our planet. Human activity and waste are harming the environment by polluting the air, water, and land. Discover the facts about where pollution comes from,… More →

Peter and Vicki have just moved into their new apartment in Chicago, Illinois. With time to kill before the moving truck arrives, they visit nearby Lincoln Park Zoo. Before long, strange… More →

This captivating title examines the eruption of Mt. Vesuvius that destroyed Pompeii in 79 A.D. and what the remnants of this buried city can teach us today. More →