Anthropologists, scientists who study humans and their ways of life, are continually finding and interpreting artifacts left by our earliest ancestors. They have helped us understand our origins as well as the intriguing cultures that developed as humans spread across Earth. This volume is a concise introduction to this diverse and fascinating field. Readers will learn of the various branches of anthropology, including archeology and biological anthropology,...

Water that lurks beneath the Earth's surface is usually far easier to ignore than the water that covers it-until that water bursts forth above ground as geysers and hot springs. This engaging volume explains to young readers where this water comes from and its relationship to volcanic activity underground. They will also learn where on Earth these spectacular eruptions are found, how geothermal energy can be harnessed for our use, and much more. Striking...

"Phobia" is a word that's thrown around a lot in everyday conversation, but it's often used incorrectly. A phobia is a strong, irrational fear of an object or a situation, one that often causes great anxiety. This sensitive and informative volume is a useful guide for readers who may be grappling with a phobia or who know someone who is. In the carefully researched explanations, readers will learn what may cause phobias and how they're diagnosed

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Presents an introduction to octopuses and discusses their life cycle.

Contains an introduction to the mathematical concepts of commutative, associative, and distributive properties, by chronicling the expedition of climbing Mount Everest.

This book introduces lions, tigers, leopards, and cheetahs, describing their physical characteristics, behavior, and endangered status.

Examines a variety of sharks, habitats, what they eat, babies, and behavior.