"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 energy in many parts of the world, from Alaska to Hawaii. Discover the different forms geothermal energy, how people are harnessing and using this rich supply, and how it could be an important part of our energy future."-- Provided by publisher.

What is energy? -- What is geothermal energy? -- Geothermal energy is hot! -- Geothermal energy is cool! -- How we harvest the power -- Pros and cons -- Geothermal energy under the sea -- The geothermal country -- The power of the geysers -- Keeping it cool in Toronto -- Geothermal limits -- The challenges ahead -- Power up!.