There are many predators in the animal kingdom, but only some are perfect predators--those at the top of the food chain known for their ferocity, skill, and power. In this four-book set, read More →

In sports, injuries are often the price of playing the game. Pitcher's elbow is among the most common injuries in sports. In this book, learn all about pitcher's elbow--including what it is,… 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 →

Sharp claws, massive bodies, powerful jaws, keen senses--these are some of the reasons polar bears are the top predators in the Arctic. Find out about the adaptations and skills that make… More →

What makes a protest and why are protests important to democracies? This timely book examines the phenomena of protests historically and discusses the different ways people voice their… More →

In sports, injuries are often the price of playing the game. In this four-book set, learn all about common sports injuries, including ACL tears, concussions, hamstring injuries, and pitcher's More →

Scientists ask questions to investigate all subjects, from what lies beyond our solar system to the tiny particles that make up all matter. The six-book Start with a Question set uses an… More →

This interesting book describes the impact conflicts have had on children's lives throughout history. Some served in the military, from the early warrior state of Sparta to religious crusades More →

The World Health Organization defines Universal Health Care (UHC) as all individuals and communities receiving the health services needed without suffering financial hardship. Of the 33… More →

Vaccines are substances that help protect people from diseases and they have been proven to save lives. So why has something that should reassure people become so controversial? This useful… More →