Beneath Earth's surface is a boundless source of energy - geothermal energy. Heated by our planet's red-hot core, hot water and hot rock below the ground on which we walk already provides… More →

From trees and plants to bugs and birds, every living thing on Earth is a form of energy. And all living organisms create energy, too, in the form of their waste. The energy of living things… More →

The endless and enormous power of the sun provides life to all organisms on Earth, from the smallest plant to the largest animal. This awesome power is being used today to provide a rich and… More →

Energy makes things work. From coal and wood to gas and oil, planet Earth has a wealth of natural resources packed full of energy. The way that energy is produced and the amount we use have a More →

This book follows several high school characters as they try to put strategies for maintaining a healthy weight into practice. Attention is given to calculating Body Mass Index (BMI) and to… More →

Engineering is a field that people rely on every day. This interesting book looks at the ingenious entrepreneurs who are finding new and better methods of building roads and structures,… More →

This revised edition features the vibrant, influential culture of England. New full-color photos have been added that help trace England's contributions to world culture, such as the… More →

This revised edition of England the Land updates statistics and photographs. England's landscape is rich in beauty and dotted with history. From the breathtaking Lake District to the southern More →

This revised edition of England the People features ways of life in early England from Roman settlements to Viking invasions, and the legacies of the Angles, Saxons, Celts, and Normans,… More →

Are you fascinated by insects? Welcome to the field of entomology. This book shows how entomologists study insects to learn about Earth's history, find ways to prevent the spread of diseases… More →