Can we harness the power of lava? - Jean-Baptiste P. Koehl

Explore how geothermal energy— the heat in the Earth’s crust— is being used to create renewable electricity and power. -- 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? Jean-Baptiste P. Koehl explores the two primary models for harnessing the planet’s natural heat.