While the weather in Iceland is often cold, wet, and windy, a nearly endless supply of heat bubbles away below the surface. In fact, almost every building in the country is heated by geothermal energy in a process with virtually no carbon emissions. So how exactly does this renewable energy work?

Learn how “the land of fire and ice” harnesses planet Earth’s natural heat in this TED-Ed lesson by geologist and researcher Jean-Baptiste P. Koehl, directed by Charlotte Arene: Iceland’s superpowered underground volcanoes.[…]

More: Iceland’s super-powered underground volcanoes | The Kid Should See This