Learn how to live green in this series from noted astronaut and environmentalist, Sally Ride that is dedicated to 3 of the Earth's main resources--air, energy, and water. Each volume describes how people use the Earth's resources and what can be done to protect them. Packed with full-color photographs and illustrations. Focusing on alternative energies such as solar power, wind power, and biofuels, this book explains how these technologies are crucial to creating sustainable energy for the planet.