This book explores all forms of sustainable energy, also called renewable energy, that can be used over and over again and will never be depleted. Types covered include solar, wind, geothermal, and hydrogen-based energy. Also addressed are the scientific advances that allow for a cleaner environment and ways that renewable energy can be used in daily life.

chapter one. A world filled with renewables -- chapter two. Harnessing sunlight's vast energies -- chapter three. Clean, inexpensive wind power -- chapter four. Exploiting the planet's inexhaustible heat -- chapter five. Hydrogen's potentially limitless power.