The atlas · Interior · HeatOutline · being writtenThe Earth’s inner heatWhere the heat inside the Earth comes from, and how it escapes.The working diagram Heat flowing up from the core to the surface, with its sources shown.Page typeA lesson, led by a working diagramCollectionInterior, heatStatusPlanned and outlined. Every fact in it will be checked against a named source and listed on Sources before it goes up.Read alongsideGeothermal energy Lesson · outlineNextGeothermal energy