Subterrenes: Like Submarines but Underground

The notion of a subterrene, or underground drilling vehicle, is well established within the realm of science fiction, but what are the real-world possibilities for vehicles that drill or melt their way through the subterranean world. Robert and Joe explore in this episode of Stuff to Blow Your Mind… Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.