Heat from within – how geothermal energy works

In this new season we will be talking about an entirely hot new topic: geothermal energy. To find out all about how it works, why it isn't being used widely today, and whether it will be widely used tomorrow our host and journalist, Steve Chaid, is joined by Edith Haslinger. She is a senior scientist for sustainable thermal Energy systems at AIT, the Austrian Institute of Technology.