This bood describes the most important events in the history of the Native Americans, from their arrival on the continent to their subjugation by U.S. forces in the 1900s.

This book is a fascinating guide to the regions and sites where Native Americans lived, and to the individuals who shaped their culture.

Study the stars and billions of other astronomical objects, based on data collected from visible-light telescopes, radio telescopes, and detectors for other wavelenghts, can now reveal extraordinary information about the Universe.

Describes how technological advances in China and the Arab world during the medieval period helped make up for the lack of scientific discovery that took place in Europe after the fall of the Roman Empire and explores how the Renaissance became a great period of European learning and discovery.

This book looks at the world's polar lands and how animals and plants have adapted to survive in environments where temperatures are below freezing for most of the year.

This book looks at the world's deserts and how animals and plants have adapted to survive where there is little water and where temperatures may be scorching hot by day and bitterly cold at night.

This book looks at the world's oceans and how animals and plants have adapted to life in, on, and around salty water. Many swim at the surface, while others lurk in the pitch-black depths beneath.