Beneath Earth's surface is a boundless source of geothermal energy. Heated by our planet's red-hot core, hot water and hot rock below the ground on which we walk already provides energy in many parts of the world. Discover the different forms of geothermal energy, how people are harnessing and using this rich supply, and how it could be an important part of our energy future.
Energy from Earth's Core
Crabtree Publishing Company