We use energy every day. It lets us cook food, drive cars, and so much more. But where does energy come from? Geothermal energy comes from heat inside Earth. Kids will read this book to learn how Earth's heat is captured and used.

What is geothermal energy -- Energy timeline -- Hot springs -- Geothermal power -- Electricity and heat -- Power plants -- Heat pumps -- Heating up -- More about geothermal energy.