"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."--

"For centuries, falling water has been used in parts of the world to create energy to run grinding stones at mills and irrigation systems for crops. This interesting book shows how the use of this "clean" form of energy, called hydroelectricity, is being expanded to help us build a more sustainable future. Discover how other forms of water-based energy, such as energy from ocean waves and tides, are being harnessed and used to help create electricity...

"Human activity often leaves a trail of harmful carbon behind that directly impacts our planet. This informative book describes how every individual produces a "carbon footprint" by using energy made by burning fossil fuels and by creating waste from packaging that gets thrown away. Find out how to measure your own carbon footprint and see what effect you are having on Earth. Learn about new developments being made to reduce the amount of carbon we...